CVE-2026-30889

Discourse has Unauthorized Post Data Exposure in discourse-user-notes

CVSS 5.3 MEDIUMEPSS 0.3%CWE-862

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

20 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, a moderator could exploit insufficient authorization checks to access metadata of posts they should not have permission to view. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Affected products

discourse · discourse

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References

https://github.com/discourse/discourse/security/advisories/GHSA-5qm9-r98f-g4mq