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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products
discourse:discourse
References 6
https://github.com/discourse/discourse/security/advisories/GHSA-8hxh-573g-52gx
https://github.com/discourse/discourse/security/advisories/GHSA-8hxh-573g-52gx
https://github.com/discourse/discourse/pull/42882
https://github.com/discourse/discourse/pull/42882
https://github.com/discourse/discourse/commit/113c34d433d564bc69642649d501251a7…
https://github.com/discourse/discourse/commit/113c34d433d564bc69642649d501251a7e820b52
https://github.com/discourse/discourse/commit/20c48bef712ee3edd4f7af58ca1123cb0…
https://github.com/discourse/discourse/commit/20c48bef712ee3edd4f7af58ca1123cb0c16ef6f
https://github.com/discourse/discourse/commit/a04cab107a9f57939456181c4b082d0a3…
https://github.com/discourse/discourse/commit/a04cab107a9f57939456181c4b082d0a34ec39bd
https://github.com/discourse/discourse/commit/cb3ca8420fcc7aba334effd011cf41943…
https://github.com/discourse/discourse/commit/cb3ca8420fcc7aba334effd011cf41943a336fa6