CVE-2023-25172 Information

Description

Discourse is an open-source discussion platform. Prior to version 3.0.1 of the stable branch and version 3.1.0.beta2 of the beta and tests-passed branches a maliciously crafted URL can be included in a user’s full name field to to carry out cross-site scripting attacks on sites with a disabled or overly permissive CSP (Content Security Policy). Discourse’s default CSP prevents this vulnerability. The vulnerability is patched in version 3.0.1 of the stable branch and version 3.1.0.beta2 of the beta and tests-passed branches. As a workaround enable and/or restore your site’s CSP to the default one provided with Discourse.

Reference

https://github.com/discourse/discourse/commit/1a5a6f66cb821ed29a737311d6fdc2eba5adc915 https://github.com/discourse/discourse/security/advisories/GHSA-7pm2-prxw-wrvp https://github.com/discourse/discourse/pull/20008 https://github.com/discourse/discourse/pull/20009 https://github.com/discourse/discourse/commit/c186a46910431020e8efc425dec2133e7a99fa9a