CVE-2023-43657

discourse-encrypt is a plugin that provides a secure communication channel through Discourse. Improper escaping of encrypted topic titles could lead to a cross site scripting (XSS) issue when a site has content security policy (CSP) headers disabled. Having CSP disabled is a non-default configuration, and having it disabled with discourse-encrypt installed will result in a warning in the Discourse admin dashboard. This has been fixed in commit `9c75810af9` which is included in the latest version of the discourse-encrypt plugin. Users are advised to upgrade. Users unable to upgrade should ensure that CSP headers are enabled and properly configured.

• CWE-79

• https://developer.mozilla.org/en-US/docs/Web/HTTP/CSPProduct
• https://github.com/discourse/discourse-encrypt/commit/9c75810af9a474d7edaec67dea66f852c0ba1f4ePatch
• https://github.com/discourse/discourse-encrypt/security/advisories/GHSA-5fh6-wp7p-xx7vVendor Advisory
• https://developer.mozilla.org/en-US/docs/Web/HTTP/CSPProduct
• https://github.com/discourse/discourse-encrypt/commit/9c75810af9a474d7edaec67dea66f852c0ba1f4ePatch
• https://github.com/discourse/discourse-encrypt/security/advisories/GHSA-5fh6-wp7p-xx7vVendor Advisory

Published

Sep 28, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2023-43650JumpServer is an open source bastion host. The verification …7.4
• CVE-2023-43651JumpServer is an open source bastion host. An authenticated …9.9
• CVE-2023-43652JumpServer is an open source bastion host. As an unauthentic…9.1
• CVE-2023-43654TorchServe is a tool for serving and scaling PyTorch models …9.8
• CVE-2023-43655Composer is a dependency manager for PHP. Users publishing a…8.8
• CVE-2023-43656matrix-hookshot is a Matrix bot for connecting to external s…9
• CVE-2023-43658dicourse-calendar is a plugin for the Discourse messaging pl…6.1
• CVE-2023-43659Discourse is an open source platform for community discussio…5.4
• CVE-2023-4366Use after free in Extensions in Google Chrome prior to 116.0…8.8
• CVE-2023-43660Warpgate is a smart SSH, HTTPS and MySQL bastion host for Li…8.1
• CVE-2023-43661Cachet, the open-source status page system. Prior to the 2.4…8.8
• CVE-2023-43662ShokoServer is a media server which specializes in organizin…8.6