SQL Injection Issue in Discourse Platform Affecting Uploads
CVE-2026-91133

6.5MEDIUM

Key Information:

Vendor

Discourse
Status
Discourse
Vendor
CVE Published:
24 September 2026

What is CVE-2026-91133?

An issue in Discourse prior to versions 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0 allows authenticated users to leverage unescaped SQL LIKE metacharacters. This vulnerability enables unauthorized access to metadata of uploads, including original filenames and secure-upload paths, without needing to alter the upload records. Users can inadvertently select unrelated upload records through wildcard input, potentially exposing sensitive information.

Affected Version(s)

discourse < 2026.8.0 < 2026.8.0

discourse >= 2026.7.0-latest, < 2026.7.2 < 2026.7.0-latest, 2026.7.2

discourse >= 2026.6.0-latest, < 2026.6.3 < 2026.6.0-latest, 2026.6.3

References

https://github.com/discourse/discourse/security/advisorie...
x_refsource_CONFIRM
https://github.com/discourse/discourse/pull/42882
x_refsource_MISC
https://github.com/discourse/discourse/commit/113c34d433d...
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.