High severity7.7NVD Advisory· Published Sep 15, 2026
CVE-2026-91923
CVE-2026-91923
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.
Affected products
1- Range: <=4.1.3
Patches
Vulnerability mechanics
References
5- github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3438862/config/ks-core/templates/globalroles.yamlnvd
- github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3438862/pkg/kapis/resources/v1alpha2/handler.gonvd
- github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3438862/pkg/models/git/git.gonvd
- github.com/kubesphere/kubesphere/issues/6653nvd
- www.vulncheck.com/advisories/kubesphere-through-4.1.3-ssrf-via-git-credential-verification-endpointnvd
News mentions
0No linked articles in our index yet.