GHSA-29xf-69gq-m9jx Coder: User-admin role can reset owner account password

• Go github.com/coder/coder/v2: >= 2.34.0, < 2.34.2 → fixed in 2.34.2 • Go github.com/coder/coder/v2: >= 2.33.0, < 2.33.8 → fixed in 2.33.8 • Go github.com/coder/coder/v2: >= 2.30.0, < 2.32.7 → fixed in 2.32.7 • Go github.com/coder/coder/v2: < 2.29.17 → fixed in 2.29.17

Summary The `PUT /api/v2/users/{user}/password` endpoint authorized only `ActionUpdatePersonal` and did not prevent a `user-admin` from resetting an `owner` account's password. It also did not require the current password when an admin reset another user's password. > Note: Exploitation requires the privileged `user-admin` role so practical risk is limited to deployments that grant `user-admin` to less trusted operators. Impact A `user-admin` could reset any owner's password without knowing it, authenticate as that owner and gain full deployment control, including templates, workspaces, licensing, organization settings and the ability to self-assign the `owner` role. This was a privilege escalation from `user-admin` to `owner`. Patches The fix prevents non-owner users from resetting the password of an account that holds the `owner` role. The fix was backported to all supported release lines: | Release line | Patched version | |---|---| | 2.34 | v2.34.2 | | 2.33 | v2.33.8 | | 2.32 | v2.32.7 | | 2.29 (ESR) | v2.29.17 | Workarounds Restrict the `user-admin` role to trusted administrators until upgrading. Resources • Fix: #25709 Credits Coder would like to thank Anthropic's Security Team (ANT-2026-22436) for independently disclosing this issue!