CVE Catalog

CVE-2026-6970

High
Published: Translated: NVD NIST

Summary

authd prior to version 0.6.4 contains a logic error in primary group ID assignment that can lead to local privilege escalation. When a user's primary GID differs from their UID, authd incorrectly resets the GID to the UID upon next login, causing newly created files and directories to be owned by the wrong group, leading to denial of service and potential privilege escalation.

Risk Assessment

The risk includes unauthorized access to other users' files and local privilege escalation, potentially leading to full system compromise.

Recommendation

Immediately upgrade authd to version 0.6.4 or later and audit for any unauthorized permission changes.

Related vulnerabilities

Original NVD description (English source)

authd prior to version 0.6.4 contains a logic error in primary group ID assignment that can lead to local privilege escalation. When a user's primary group ID (GID) differs from their UID, either because the account was created with authd prior to version 0.5.4 or because the primary group was manually changed via the `authctl group set-gid` command, and the user's identity provider record is updated, authd incorrectly resets the user's primary group ID to their UID upon next login. This causes newly created files and directories to be owned by the wrong group, causing denial of service issues, and potentially granting unintended access to other local users and allowing local privilege escalation.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS