Fiche vulnérabilité
CVE-2026-27491 : faille moyenne discourse discourse (CVSS 4.3)
Description
Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a type coercion issue in a post actions API endpoint allowed non-staff users to issue warnings to other users. Warnings are a staff-only moderation feature. The vulnerability required the attacker to be a logged-in user and to send a specifically crafted request. No data exposure or privilege escalation beyond the ability to create unauthorized user warnings was possible. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.
En bref
- Sévérité
- Moyenne (CVSS 4.3)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Exploitation active
- Non signalée par la CISA
- Publication
- 19 mars 2026
- Dernière mise à jour
- 17 juin 2026
Produits concernés
- discourse discourse