CVE-2026-91923
KubeSphere through 4.1.3 SSRF via git credential verification endpoint
- State
- Published
- Severity
- 8.3 High
- Published
- Sep 15, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 15, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.3 High | 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 | VulnCheck |
| 3.1 | 7.7 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
kubespherekubesphere |
|
References
- GitHub Issue #6653issue-tracking
- https://github.com/kubesphere/kubesphereproduct
- git.go - gitReadVerifyWithBasicAuth passes remoteUrl to origin.List unvalidatedtechnical-description
- handler.go - VerifyGitCredential returns the go-git error to the callertechnical-description
- globalroles.yaml - authenticated GlobalRole grants create on resources.kubesphere.io gittechnical-description
- VulnCheck Advisory: KubeSphere through 4.1.3 SSRF via git credential verification endpointthird-party-advisory
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.