CVE-2026-72725

EUVD-2026-55664
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
GitHub_MCNA
5.4 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 22.68%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
discoursediscourse
𝑥
< 2026.1.6
CNA
discoursediscourse
2026.5.0 ≤
𝑥
< 2026.5.2
CNA
discoursediscourse
2026.6.0 ≤
𝑥
< 2026.6.1
CNA
Common Weakness Enumeration
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