CVE-2026-19621
CVE-2026-19621 · Mattermost leaks interactive-message integration secrets to non-admin users via post-deletion events and thread reads
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Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to strip action integration secrets from post payloads before broadcasting post-deletion web socket events and returning thread API responses, which allows an authenticated channel member to obtain server-side webhook URLs and authentication context from interactive-message posts via the post_deleted websocket event or the threads REST API.. Mattermost Advisory ID: MMSA-2026-00766
CVSS 6.5 · Moyenne · EPSS 0,2%
- Publication
- Mise à jour
Produits et versions concernés
mattermost
- Versions du logiciel
- ≥ 11.10.0, ≤ 11.10.0: Concernée (semver)
- ≥ 11.7.0, ≤ 11.7.9: Concernée (semver)
- ≥ 11.9.0, ≤ 11.9.1: Concernée (semver)
- ≥ 11.8.0, ≤ 11.8.5: Concernée (semver)
- 11.11.0: Non concernée
- 11.10.1: Non concernée
- 11.7.10: Non concernée
- 11.9.2: Non concernée
- 11.8.6: Non concernée
Aucun correctif publié