Description
Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, authenticated users could supply unescaped SQL LIKE metacharacters to upload-resolution patterns, causing wildcard input to select unrelated upload records instead of matching a literal identifier. The affected upload metadata, URL-lookup, and cooked-video-placeholder paths could resolve uploads the user was not authorized to access. This allowed disclosure of restricted metadata, including original filenames and secure-upload paths, without modifying the upload records. This issue is fixed in versions 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0.
References6
- github.com/discourse/discourse/commit/113c34d433d564bc69642649d…
- github.com/discourse/discourse/commit/20c48bef712ee3edd4f7af58c…
- github.com/discourse/discourse/commit/a04cab107a9f57939456181c4…
- github.com/discourse/discourse/commit/cb3ca8420fcc7aba334effd01…
- github.com/discourse/discourse/pull/42882
- github.com/discourse/discourse/security/advisories/GHSA-8hxh-57…
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 0% percentile: 21 · as of 9 November 2026
- CWE
- CWE-943
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.