Webflow Filter icon
Module Id
Group Id
Requires Jahia
Tools and Utilities

Webflow Filter check_circle

webflow filter security

This module adds a security filter to protect the features using Webflow against CVE-2017-4971

Dependencies & Dependants

  • NONE
  • NONE

Changelog 2.2.0

  • Expanded the filter to reject requests containing "classLoader" in the parameters
  • Converted the module to a system module, installing it will enable it platform-wide.


On which Jahia version can I deploy the module?

On any version from to 8.0.3

What does the filter do exactly?

The filter acts as a protection against invalid expressions, which should not appear in standard forms - only explicit attacks. If the filter finds invalid parameters, it will block the webflow request and add a log entry starting with "Invalid parameters sent to webflow, potential attack from..."

How To Install

Deploy and start the module.


========================================================================================== = JAHIA'S ENTERPRISE DISTRIBUTION = ========================================================================================== http://www.jahia.com JAHIA'S ENTERPRISE DISTRIBUTIONS LICENSING - IMPORTANT INFORMATION ========================================================================================== Copyright (C) 2002-2020 Jahia Solutions Group. All rights reserved. This program is part of a Jahia's Enterprise Distribution. Jahia's Enterprise Distributions must be used in accordance with the terms contained in the Jahia Solutions Group Terms & Conditions as well as the Jahia Sustainable Enterprise License (JSEL). For questions regarding licensing, support, production usage... please contact our team at sales@jahia.com or go to http://www.jahia.com/license. ========================================================================================== JAHIA SUSTAINABLE ENTERPRISE LICENSE (JSEL) Version 2.0 INTRODUCTION The JAHIA Sustainable Enterprise License ("License") may include: 1) Test, Research and Development Right of Usage and 2) Commercial Right of Usage. You have agreed to the terms of this License by selecting the "Accept" button at the end of the JSEL or executing a hardcopy JSEL or a document that expressly referred to the License with Jahia Solutions Group SA ("JSG"). The Commercial Use must be approved by You and JSG with the signature of a related document, delivered by JSG, in order to become effective. Capitalized terms used in this License are defined in the Definitions section. 1. DEFINITIONS. 1.1. "Approved Counterpart" means the Modification(s), which are identified by You as potential Generic Elements, which you suggest as a counterpart to JSG and which were accepted, validated and developed by JSG. 1.2. "Commercial Use" means any use of Original Software by You, alone or bundled with any other software or hardware, at the exclusion of any Test, Research and Development Use. 1.3. "Contributor" means each individual or entity that creates or contributes to the creation of Modifications. 1.4. "Covered Software" means (a) the Original Software, or (b) Generic Developments, or (c) the combination of files containing Original Software with files containing Generic Developments, in each case including portions thereof. 1.5. "Executable" means the Covered Software in any form other than Source Code. 1.6. "Generic Developments" are defined as Modifications done at Your request by JSG as a contribution to the Original Software and identified as such on the JSG Order Forms signed by You. Once incorporated into the Original Software, Generic Developments are by nature subject to the terms of the licenses used by JSG. 1.7. "Generic Elements" means, without limitation: software, modules, patches, bug fixes, API, ideas, methods, concepts, know-how, structures, techniques, inventions, developments, processes, discoveries, improvements and other information and materials developed by JSG before or during the execution of JSG Offering. 1.8. "JSG Offering": software and services proposed by JSG under JSG terms and conditions. 1.9. "JSG Terms and Conditions": terms and conditions under which JSG is providing JSG Offering to You. 1.10. "Larger Work" means a work which combines Covered Software or portions thereof with code not governed by the terms of this License. 1.11. "License" means this document. 1.12. "Licensable" means having the right to grant, to the maximum extent possible, whether at the time of the initial grant or subsequently acquired, any and all of the rights conveyed herein. 1.13. "Modifications" means the Source Code and Executable form of any of the following: A. Any file that results from an addition to, deletion from or modification of the contents of a file containing Original Software or previous Modifications; B. Any new file that contains any part of the Original Software or previous Modification; or C. Any new file that is contributed or otherwise made available under the terms of this License. 1.14. "Original Software" means the Source Code and Executable form of the Jahia Enterprise Edition software code that is released under this License. 1.15. "Patent Claims" means any patent claim(s), now owned or hereafter acquired, including without limitation, method, process, and apparatus claims, in any patent Licensable by grantor. 1.16. "Source Code" means (a) the common form of computer software code in which modifications are made and (b) associated documentation included in or with such code. 1.17. "Specific Developments" are defined as the work performed at Your request and identified as such in the context of JSG Order Forms that are associated with said Specific Developments and are signed by You before any work is done. 1.18. "Specific Elements" are defined as all of the elements supplied to JSG by You in the context of performance of the Services, for which You owns the intellectual property rights. 1.19. "Test, Research and Development Use" means use of the Original Software only for testing, researching and developing the Original Software and expressly excludes any distribution rights and use for direct or indirect commercial or strategic gain or advantage which is subject to execution of a purchase or reselling agreement by You and JSG. 1.20. "You" (or "Your") means an individual or a legal entity exercising rights under, and complying with all of the terms of, this License. For legal entities, "You" includes any entity which controls, is controlled by, or is under common control with You. For purposes of this definition, "control" means (a) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (b) ownership of more than fifty percent (50%) of the outstanding shares or beneficial ownership of such entity. 2. LICENSE GRANTS FOR RESEARCH AND DEVELOPMENT USE. JSG hereby grants You a world-wide, royalty-free, non-exclusive Test, Research and Development Use license: (a) under intellectual property rights (other than patent or trademark), licensable by JSG, to use, modify, display, and perform the Original Software (or portions thereof), with or without Modifications, and/or as part of a Larger Work, for Test, Research and Development Use by You; and (b) under Patent Claims infringed by the making or using of Original Software, to make, have made, use, practice and/or otherwise dispose of the Original Software (or portions thereof) for Test, Research and Development Use by You. (c) The licenses granted in Sections 2(a) and 2(b) are effective on the date JSG first distributes or otherwise makes the Original Software available to a third party under the terms of this License for Test, Research and Development Use by You. (d) Notwithstanding Section 2(b) above, no patent license is granted: (1) for code that You delete from the Original Software, or (2) for infringements caused by: (i) the modification of the Original Software, or (ii) the combination of the Original Software with other software or devices. (e) Execution of the Covered Software for all other purposes than mentioned in this Section is subject to a fee, payable to JSG and to be mutually agreed upon by You and JSG. The grant explicitly does not apply to Commercial Use of the Original Software. Commercial Use of Original Software requires a signed approval explicitly issued for that purpose by JSG. (f) Other than the rights expressly granted in this License, JSG retains all rights, titles, and interests in the Original Software. 3. LICENSE GRANTS FOR COMMERCIAL USE. 3.1. Commercial Use of the Original Software requires the payment of a fee as describe by JSG in JSG Offering. The details of Your fees, payment schedule and scope of use (subscription, number of JVM, users, servers, modules, support scope,...) applicable have to be agreed on a document provided by JSG and signed by You according to JSG Offering. 3.2. Conditioned upon the payment of the appropriate fee to JSG, the respect of this License terms and limited to the scope of Commercial Use as defined by JSG, JSG hereby grants You a world-wide, non-exclusive and fee-bearing license: (a) under intellectual property rights (other than patent or trademark) Licensable by JSG, to use, display, perform the Original Software (or portions thereof), with or without Modifications, and/or as part of a Larger Work for Commercial Use; and (b) under Patent Claims infringed by the making or using of Original Software, to make, have made, use, practice, sell, and offer for sale, and/or otherwise dispose of the Original Software (or portions thereof) for Commercial Use. (c) The licenses granted are effective on the date JSG first distributes or otherwise makes the Original Software available to a third party under the terms of this License. (d) Notwithstanding Section 3(b) above, no patent license is granted: (1) for code that You delete from the Original Software, or (2) for infringements caused by: (i) the modification of the Original Software, or (ii) the combination of the Original Software with other software or devices. (e) Other than the rights expressly granted in this License, JSG retains all rights, titles, and interests in Original Software 3.3. Commercial Distribution Requirement / OEM Agreement You may distribute copies for Commercial Use or integrate Original Software in a Larger Work under a license agreement of Your choice which is consistent with Your rights and obligations under the License including with the fact that you need to pay fees to JSG for each copy of the Original Software you distribute for Commercial Use according to a specific Agreement, You and JSG have to sign before the Distribution of the Larger work. You may provide warranties, indemnities and/or other additional terms and conditions in Your license agreements, provided that it is clear that such additional terms and conditions are offered by You only. You hereby agree to indemnify JSG for any liability incurred by the Initial Developer as a result of any such terms You offer. 4. AVAILABILITY AND POTENTIAL MODIFICATIONS OF SOURCE CODE. 4.1. Conditioned upon Your compliance with this License, JSG hereby grants You an access to the Original Software Source Code. The Modifications of the Source Code that You may create or to which You may contribute, are, by nature, governed by the terms of this License. JSG Offering (for example, support services) may not cover Modifications on the Original Software otherwise than those explicitly accepted by JSG in a dedicated agreement as, for example, when those Modifications are integrated in the Original Software and therefore considered as a Generic Development according to the term of paragraph 12 of this License. 4.2. JSG may optionally offer coverage on a Larger Work. Details of the related fees, payment schedule and scope of coverage have to be defined in a dedicated agreement signed between You and JSG. 5. VERSION OF THE LICENSE 5.1. New Versions JSG is the initial license steward and may publish revised and/or new versions of this License from time to time. Each version will be given a distinguishing version number. No one other than the license steward has the right to modify this License. 5.2. Effect of New Versions You may always continue to a)use the version of the Original Software under the terms of the version of the License under which You originally received the version of Original Software or b)use the new version. 6. CONFIDENTIALITY You and JSG agree to maintain the confidentiality of any proprietary information received by the other party during, or prior to entering into, this Agreement including non-public technical and business information for a period of two (2) years after the termination of this Agreement. This section shall not apply to any publicly available or independently developed information. The receiving party of any confidential information of the other party agrees not to use said confidential information for any purpose except as necessary to fulfil its obligations and exercise its rights under this Agreement. The receiving party shall protect the secrecy of and avoid disclosure and unauthorized use of the disclosing party's confidential information to the same degree that it takes to protect its own confidential information and in no event less than reasonable care. 7. DISCLAIMER OF WARRANTY. COVERED SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES THAT THE COVERED SOFTWARE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED SOFTWARE IS WITH YOU. SHOULD ANY COVERED SOFTWARE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. NO USE OF ANY COVERED SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER. 8. LIMITATION OF LIABILITY. UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, WHETHER TORT (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL YOU, THE INITIAL DEVELOPER, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF COVERED SOFTWARE, OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO ANY PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOST PROFITS, LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR MALFUNCTION, OR ANY AND ALL OTHER COMMERCIAL DAMAGES OR LOSSES, EVEN IF SUCH PARTY SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF SUCH DAMAGES. THIS LIMITATION OF LIABILITY SHALL NOT APPLY TO LIABILITY FOR DEATH OR PERSONAL INJURY RESULTING FROM SUCH PARTY"S NEGLIGENCE TO THE EXTENT APPLICABLE LAW PROHIBITS SUCH LIMITATION. SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THIS EXCLUSION AND LIMITATION MAY NOT APPLY TO YOU. 9. U.S. GOVERNMENT END USERS. The Original Software is a "commercial item," as that term is defined in 48 C.F.R. 2.101 (Oct. 1995), consisting of "commercial computer software" (as that term is defined at 48 C.F.R. 252.227-7014(a)(1)) and "commercial computer software documentation" as such terms are used in 48 C.F.R. 12.212 (Sept. 1995). Consistent with 48 C.F.R. 12.212 and 48 C.F.R. 227.7202-1 through 227.7202-4 (June 1995), all U.S. Government End Users acquire Covered Software with only those rights set forth herein. This U.S. Government Rights clause is in lieu of, and supersedes, any other FAR, DFAR, or other clause or provision that addresses Government rights in computer software under this License. 10. TERMINATION. This License and the rights granted hereunder will terminate automatically if You fail to comply with terms herein and fail to cure such breach within 30 days of becoming aware of the breach. Provisions which, by their nature, must remain in effect beyond the termination of this License shall survive. The Term of this License is subject to your compliance with the term of this License and the payment of the appropriate fee according to JSG Offering considering the Commercial Use of the Software. 11. MISCELLANEOUS. This License represents the complete agreement concerning subject matter hereof. If any provision of this License is held to be unenforceable, such provision shall be reformed only to the extent necessary to make it enforceable. This License shall be governed by the law of the jurisdiction specified in the JSG Terms and Conditions (except to the extent applicable law, if any, provides otherwise), excluding such jurisdiction"s conflict-of-law provisions. Any litigation relating to this License shall be subject to the jurisdiction of the courts located in the jurisdiction and venue specified in a notice contained within in the JSG Terms and Conditions, with the losing party responsible for costs, including, without limitation, court costs and reasonable attorney"s fees and expenses. The application of the United Nations Convention on Contracts for the International Sale of Goods is expressly excluded. Any law or regulation which provides that the language of a contract shall be construed against the drafter shall not apply to this License. You agree that You alone are responsible for compliance with the United States export administration regulations (and the export control laws and regulation of any other countries) when You use, distribute or otherwise make available any Covered Software. 12. GENERIC DEVELOPMENT, APPROVED COUNTERPART, AND JOIN CONTRIBUTION 12.1. JSG offers a counterpart, usually under the form of a free Commercial Right of usage of the Software attached to the payment of a subscription, in exchange of a Generic Developments and Your copyright assignment to JSG, when the related Generic Developments are financed by You, except for the co- development cases of join contribution (12.7)). 12.2. The decision to accept a Generic Development as an Approved Counterpart, its value, the form of compensation and the criteria applied are let to the sole discretion of JSG. 12.3. Description of the Approved Counterpart, its value and the type of compensation which shall be approved by both parties in a separated document provided by JSG. 12.4. Modifications considered as Approved Counterpart are, by nature, Generic Developments. 12.5. All Specific Elements, not owned by JSG and provided by You to JSG for Services execution, shall remain Your exclusive property when You owns the property of specific materials. 12.6. All specific development, requested by You from JSG and listed on dedicated JSG document shall remain Your exclusive property except for the Generic Elements, even if these Generic Elements are developed at the same time as the Specific development and/or are needed by the Specific development to work, particularly when Generic Elements are integrated in the Original Software and therefore are by nature subject to the terms of the licenses used by JSG. 12.7. Join contribution: As an exclusive exception to the Generic Developments definition, JSG may agree to accept some Modifications done by You in order to complete all - or part of - Generic Developments. This particular type of Generic Developments is considered as "Join Contributions" between You and JSG and You are considered as a Contributor for the related Generic Development You agreed to take in charge under the following rules: a) Contributor owns, and has sufficient rights to contribute, all source code and related material intended to be compiled or integrated with the source code for the Modifications Contributor has ever delivered, and JSG has accepted, for incorporation into the Covered Software. b) Contributor hereby assigns to JSG joint ownership in all worldwide common law and statutory rights associated with the copyrights, copyright application, copyright registration and moral rights in the Approved Counterpart to the extent allowable under applicable local laws and copyright conventions. Contributor agrees that this assignment may be submitted by JSG to register a copyright in the Approved Counterpart. Contributor retains the right to use the Approved Counterpart for Contributor's own purposes. This joint copyright Assignment supersedes and replaces all prior copyright assignments made by Contributor to JSG for the related Modifications provided by Contributor in this case of join contribution. c) Contributor grants JSG the ability to use the related Modifications he provided in any way with a sublicenseable, non-exclusive, irrevocable, worldwide, royalty-free, transferable license to relicense, use, copy, modify, distribute and publicly perform and display the related Modifications on any licensing terms (commercial or not). d) Contributor is legally entitled to grant the above assignment and agrees not to provide any Contribution that violates any law or breaches any contract. e) JSG may require You to submit your Modifications within a specific period of time. The default period is 6 months. f) The right to validate your Modifications as an Approved Counterpart is only applicable by JSG. JSG may ask for additional corrections on Your Modifications before definitively accepting it as an Approved Counterpart. g) Each party is responsible for claims and damages arising, directly or indirectly, out of its utilization of rights under this License and You agree to work with JSG to distribute such responsibility according to the Modifications Contributor provided. Nothing herein is intended or shall be deemed to constitute any admission of liability.