Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Coder versions before 2.23.0 (github.com/coder/coder/v2) fail to enforce the expiry of an OIDC token when the identity provider returns no refresh token. A user whose OIDC login has expired can keep using the web session, and API requests succeed as long as their APIKey cookie is still valid, which can extend indefinitely if the key is used at least once every 24 hours. Upgrade to Coder 2.23.0 or later. The source gives no workaround.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 2.3 | Low | 4.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N | CNA (VulnCheck) |
- CISA KEV Not listed.
- EPSS 0.0018, the 7th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:12 UTC First seen by agentprime
- 31 Oct 2026, 14:12 UTC Confirmed by OSV