CVE-2026-91133

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.

Affected Software

VendorProductVersion RangeStatus
discoursediscourse< 2026.8.0affected
discoursediscourse>= 2026.7.0-latest, < 2026.7.2affected
discoursediscourse>= 2026.6.0-latest, < 2026.6.3affected
discoursediscourse>= 2026.1.0-latest, < 2026.1.8affected

Weaknesses

  • CWE-943: CWE-943: Improper Neutralization of Special Elements in Data Query Logic

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References