Unrated severityNVD Advisory· Published Oct 16, 2023· Updated Sep 16, 2024
Cross-site Scripting via email preview when CSP disabled in Discourse
CVE-2023-43659
Description
Discourse is an open source platform for community discussion. Improper escaping of user input allowed for Cross-site Scripting attacks via the digest email preview UI. This issue only affects sites with CSP disabled. This issue has been patched in the 3.1.1 stable release as well as the 3.2.0.beta1 release. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum.
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Affected products
3<3.1.1+ 1 more
- (no CPE)range: <3.1.1
- (no CPE)range: stable <= 3.1.1
Patches
Vulnerability mechanics
References
2- developer.mozilla.org/en-US/docs/Web/HTTP/CSPmitrex_refsource_MISC
- github.com/discourse/discourse/security/advisories/GHSA-g4qg-5q2h-m8phmitrex_refsource_CONFIRM
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