CVE-2026-33394

Discourse leaks PM post edits to moderators

CVSS 2.7 LOWEPSS 0.3%CWE-200

Vexday Risk Score

8Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 2.7EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

19 Mar 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

Affected products

discourse · discourse

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References

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