CVE-2026-91923
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.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.3
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
- EPSS probability
- 0.27%
- CWE
- CWE-918
- Published
- 2026-09-15
- Last modified
- 2026-09-15
Affected products
- kubesphere kubesphere
Weakness type
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