CVE-2026-91923
High
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.
SeverityHigh
CVSS7.7
Exploit probability—
ProductKubesphere
PublishedSep 15, 2026
First seenSep 15, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| kubesphere kubesphere | v ≤ 4.1.3 | — |
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