CVE-2026-91133
mediumDiscourse is an open-source discussion platform.
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/discourse/discourse/commit/113c34d433d564bc69642649d501251a7e820b52 security-advisories@github.com
- https://github.com/discourse/discourse/commit/20c48bef712ee3edd4f7af58ca1123cb0c16ef6f security-advisories@github.com
- https://github.com/discourse/discourse/commit/a04cab107a9f57939456181c4b082d0a34ec39bd security-advisories@github.com
- https://github.com/discourse/discourse/commit/cb3ca8420fcc7aba334effd011cf41943a336fa6 security-advisories@github.com
- https://github.com/discourse/discourse/pull/42882 security-advisories@github.com
- https://github.com/discourse/discourse/security/advisories/GHSA-8hxh-573g-52gx security-advisories@github.com