CVE-2026-91133 json
Discourse: Escape LIKE metacharacters in upload paths to prevent disclosure
published 2026-09-24 45 d ago modified 2026-10-01 39 d ago also BIT-discourse-2026-91133 , EUVD-2026-86299 , GHSA-8hxh-573g-52gx
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- bitnami discourse 2026.8.0
- discourse discourse 2026.1.8, 2026.6.3, 2026.7.2, 2026.8.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 45 d ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| OSV | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | discourse | <2026.8.0 |
2026.8.0 |
Affected products
- discourse discourse
Classification
- Weakness
-
- CWE-943 Improper Neutralization of Special Elements in Data Query Logic
References
-
github.com
/discourse/discourse/pull/42882
web
-
github.com
/discourse/discourse/commit/113c34d433d564bc69642649d501251a7e820b52
web
-
github.com
/discourse/discourse/commit/20c48bef712ee3edd4f7af58ca1123cb0c16ef6f
web
-
github.com
/discourse/discourse/commit/a04cab107a9f57939456181c4b082d0a34ec39bd
web
-
github.com
/discourse/discourse/commit/cb3ca8420fcc7aba334effd011cf41943a336fa6
web
-
github.com
/discourse/discourse/security/advisories/GHSA-8hxh-573g-52gx
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-91133
web
Sources
- CVE List CVE-2026-91133
- NVD CVE-2026-91133
- OSV BIT-discourse-2026-91133
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.