CVE-2026-72725: Discourse

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Discourse Discourse: before 2026.1.6 (fixed in 2026.1.6); from 2026.5.0, before 2026.5.2 (fixed in 2026.5.2); from 2026.6.0, before 2026.6.1 (fixed in 2026.6.1)

Published 2026-08-10. Last modified 2026-09-08.