Is CVE-2026-91923 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-91923?

CVE-2026-91923 has a CVSS v3 severity of HIGH (7.7).

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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.