CVE-2026-72729lowCWE-79

Discourse: Stored XSS in discourse-local-dates plugin

8Vexday Risk Score

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

ssvc Trackcvss 2epss 0.3%

exploitation probability

0.3%top 79% of all CVEs

observed exploitation

nono source reports it

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the discourse-local-dates plugin rendered crafted local-date format data as HTML on sites with a modified or disabled default Content Security Policy. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.

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

Affected products

discourse · discourse

References

https://github.com/discourse/discourse/commit/9768f476ed86ea202440cd2b6245af8a4f94ec69 https://github.com/discourse/discourse/commit/981ba23d33d2e2d98f6690734116af58f2cea938 https://github.com/discourse/discourse/commit/a7e509bfa1aa6288b447503de6ef798c31a62751 https://github.com/discourse/discourse/commit/d5d5055fbdf04d5bd72fcaa7e4257fac5adac049 https://github.com/discourse/discourse/security/advisories/GHSA-rw96-2xg7-h54g