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CVE-2025-12421

Mattermost fails to to verify the token used during code exchange

Veröffentlicht Geändert CWE 303
In der Trivy Database seit spätestens 24. Okt. 2026, 07:11 UTCWann der Eintrag vor diesem Build hinzukam, ist nicht erfasst.

Einstufung nach Quelle

GHSA10.0CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Trivys eigenes Label ist CRITICAL. Kritisch laut GHSA.

Beschreibung

Mattermost versions 11.0.x <= 11.0.2, 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to to verify that the token used during the code exchange originates from the same authentication flow, which allows an authenticated user to perform account takeover via a specially crafted email address used when switching authentication methods and sending a request to the /users/login/sso/code-exchange endpoint. The vulnerability requires ExperimentalEnableAuthenticationTransfer to be enabled (default: enabled) and RequireEmailVerification to be disabled (default: disabled).

Betroffene Pakete und behobene Versionen

QuellePaketBehoben in
go::GitHub Security Advisory Gogithub.com/mattermost/mattermost-server, github.com/mattermost/mattermost/server/v811.0.3, 10.12.2, 10.11.5, 10.5.13 und 1 weitere
Alle 2 Einträge aus 1 Quelle zeigen
QuellePaketBehoben in
go::GitHub Security Advisory Gogithub.com/mattermost/mattermost-server11.0.3, 10.12.2, 10.11.5, 10.5.13
go::GitHub Security Advisory Gogithub.com/mattermost/mattermost/server/v88.0.0-20251022210333-acda1fb5dd46

Referenzen

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.