Vulnerability Description
KubeSphere through 4.1.3 contains a server-side request forgery vulnerability in the git credential verification endpoint that accepts unvalidated caller-supplied URLs without allowlist restrictions. Authenticated attackers can supply arbitrary URLs to reach internal services and exfiltrate basic-auth credentials from Secrets in any namespace by leveraging the endpoint's error response handling.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/kubesphere/kubesphere
- https://github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3
- https://github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3
- https://github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3
- https://github.com/kubesphere/kubesphere/issues/6653
- https://www.vulncheck.com/advisories/kubesphere-through-4.1.3-ssrf-via-git-crede
FAQ
What is CVE-2026-91923?
CVE-2026-91923 is a vulnerability with a CVSS score of 7.7 (HIGH). KubeSphere through 4.1.3 contains a server-side request forgery vulnerability in the git credential verification endpoint that accepts unvalidated caller-supplied URLs without allowlist restrictions. ...
How severe is CVE-2026-91923?
CVE-2026-91923 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-91923?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.