CVE-2026-72727

Discourse: Stored XSS in the moderation review queue

State: Published
Severity: 4.8 Medium
Published: Aug 10, 2026
Updated: Aug 13, 2026
Reserved: Aug 10, 2026

Description

Discourse is an open-source discussion platform. Prior to 026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, a low-privileged user could place crafted content in the moderation review queue that executed stored cross-site scripting when a moderator viewed it on a site 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.

Scores

CVSS	Score	Vector	Source
4.0	4.8 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
discoursediscourse	< 2026.1.6Affected >= 2026.5.0-latest, < 2026.5.2Affected >= 2026.6.0-latest, < 2026.6.1Affected

References

https://github.com/discourse/discourse/security/advisories/GHSA-pq6q-p5g3-rj54

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