CVE-2026-72725mediumCWE-79

Discourse: Stored XSS in staff action logs injects staff UI

10Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.4

exploitation probability

—

observed exploitation

nono source reports it

Discourse is an open-source discussion platform. Prior to 2026.1.6, the staff action log model rendered unescaped previous and new value fields that could inject stored cross-site scripting into the staff interface. The issue is fixed in 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.

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

Affected products

discourse · discourse

References

https://github.com/discourse/discourse/commit/66601a6e6eeeabfcb06d2f692d68534be12de082 https://github.com/discourse/discourse/commit/74ae22d85f4e13c7c7f2e3c13fce023feec7e033 https://github.com/discourse/discourse/commit/fd44510b4303e7f8f0b42bd070a2d42d3cda259f https://github.com/discourse/discourse/security/advisories/GHSA-8x29-vv56-wj6v