Vulnerability · Published Mar 19, 2026 · Assigned by GitHub_M

CVE-2026-33394Discourse leaks PM post edits to moderators

Low 2.7

In plain English

A low-severity information exposure in discourse from discourse. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)2.7Low

Exploit odds (30 days)0.4%top 69.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the Post Edits admin report (/admin/reports/post_edits) leaked the first 40 characters of raw post content from private messages and secure categories to moderators who shouldn't have access. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

Affected products (as reported)

Vendor	Product	Versions
discourse	discourse	>= 2026.1.0-latest, < 2026.1.2>= 2026.2.0-latest, < 2026.2.1= 2026.3.0-latest

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

References

https://github.com/discourse/discourse/security/advisories/GHSA-wxvr-pm5c-829p x_refsource_CONFIRM
https://github.com/discourse/discourse/commit/3bf3793a708662716c0a4eaf64ae091abe71ab4c x_refsource_MISC
https://github.com/discourse/discourse/commit/473288219e93cd17576cf15e4f0b9e388a31d0c1 x_refsource_MISC
https://github.com/discourse/discourse/commit/62721429d4402505d21280bcbe5894032447d800 x_refsource_MISC