Medium severity · published Oct 17, 2026
CVE-2025-71435
Coder before 2.23.0 Session Expiration Bypass via OIDC Without Refresh Token
4.2
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
coder · coder
before 2.23.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-71435
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-71435
github.com
https://github.com/coder/coder/security/advisories/GHSA-3rw9-wmc8-8948
www.vulncheck.com
https://www.vulncheck.com/advisories/coder-before-2.23.0-session-expiration-bypass-via-oidc-without-refresh-token
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