CVE-2025-71435 Coder before 2.23.0 Session Expiration Bypass via OIDC Without Refresh Token
Authenticated users can retain indefinite access after OIDC token expiry by extending APIKey cookies, bypassing session expiration controls.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-71435?
CVE-2025-71435 is a low-severity authentication bypass vulnerability in coder, published on 17 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Coder before 2.23.0 contains a session expiration bypass vulnerability that allows authenticated users to retain access after OIDC token expiry when no refresh token is issued. Users can keep their APIKey cookie active through regular use, extending it every 24 hours to access Coder indefinitely after losing OIDC authorization.
Weakness: CWE-613
Which versions are affected by CVE-2025-71435?
4 open source packages ship an affected version, including github.com/coder/coder/v2 and github.com/coder/coder.
| Package | Affected | Fixed in |
|---|---|---|
github.com/coder/coder/v2 Go | All versions | 2.23.0 |
github.com/coder/coder/v2 Go | All versions | 2.23.0 |
github.com/coder/coder/v2 Go | All versions | 2.23.0 |
github.com/coder/coder Go | All versions | None |
How do I fix CVE-2025-71435?
Upgrade github.com/coder/coder/v2 to 2.23.0 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-71435 being exploited?
There is no known exploitation of CVE-2025-71435 in the wild and no public exploit code.
Sources
Also known as GHSA-3rw9-wmc8-8948, GHSA-hpmf-3824-qwg6, GO-2025-3921.