PT-2026-26426 · Discourse · Discourse

Pmusaraj · Published 2026-03-19 · Updated 2026-03-27 · CVE-2026-33394

Positive Technologies (AI Summary)

CVSS v3.1

2.7

Low

Base vector

AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2026.3.0-latest.1 Discourse versions prior to 2026.2.1 Discourse versions prior to 2026.1.2

Description Discourse is an open-source discussion platform. The Post Edits admin report, accessible via the ''/admin/reports/post edits'' API endpoint, improperly exposed the initial 40 characters of raw post content from private messages and secure categories to moderators lacking the necessary permissions. This information leak affected content that should have remained confidential.

Recommendations Update to Discourse version 2026.3.0-latest.1 or later. Update to Discourse version 2026.2.1 or later. Update to Discourse version 2026.1.2 or later.

Exploit

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

BIT-DISCOURSE-2026-33394

CVE-2026-33394

GHSA-WXVR-PM5C-829P

Affected Products

Discourse

References · 9

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33394.json · Exploit
• https://github.com/discourse/discourse/security/advisories/GHSA-wxvr-pm5c-829p · Vendor Advisory
• https://github.com/discourse/discourse/commit/3bf3793a708662716c0a4eaf64ae091abe71ab4c · Patch
• https://github.com/discourse/discourse/commit/62721429d4402505d21280bcbe5894032447d800 · Patch
• https://github.com/discourse/discourse/commit/473288219e93cd17576cf15e4f0b9e388a31d0c1 · Patch
• https://osv.dev/vulnerability/CVE-2026-33394 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-33394 · Security Note
• https://osv.dev/vulnerability/BIT-discourse-2026-33394 · Vendor Advisory
• https://twitter.com/CVEnew/status/2034891614938689708 · Twitter Post