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Product · Canonical

authd

5 known vulnerabilities.

authd at a glance

Last 12 months
2
Critical · all time
0
Exploited · all time
0
Public exploit · all time
0
New vulnerabilities per month · last 12 months
0 1 1 December 2025: 0 vulnerabilities Dec 2025 January 2026: 0 vulnerabilities February 2026: 0 vulnerabilities March 2026: 0 vulnerabilities Mar April 2026: 1 vulnerability May 2026: 0 vulnerabilities June 2026: 0 vulnerabilities Jun July 2026: 0 vulnerabilities August 2026: 0 vulnerabilities September 2026: 0 vulnerabilities Sep October 2026: 1 vulnerability November 2026: 0 vulnerabilities
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5 results · Feed

  • Medium 5.9

    authd: Account takeover via username fallback in identity matching after IdP email reassignment

    In authd before 0.7.1, the user identity matching in UpdateUser (internal/users/manager.go) resolves an incoming login by the broker-scoped provider ID, but falls back to matching the username when the provider ID does not belong to any known user, and does n…

  • High 7.3

    authd Denial of Service and Local Privilege Escalation

    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…

  • High 8.5

    Improper Permission Management in SSH Session Handling

    A flaw was found in the temporary user record that authd uses in the pre-auth NSS. As a result, a user login for the first time will be considered to be part of the root group in the context of that SSH session.

  • High 7.5

    Authd allows attacker-controlled usernames to yield controllable UIDs

    Authd, through version 0.3.6, did not sufficiently randomize user IDs to prevent collisions. A local attacker who can register user names could spoof another user's ID and gain their privileges.

  • High 8.8

    PAM module may allow accessing with the credentials of another user

    Authd PAM module before version 0.3.5 can allow broker-managed users to impersonate any other user managed by the same broker and perform any PAM operation with it, including authenticating as them.