{"id":"CVE-2026-91923","summary":"KubeSphere through 4.1.3 SSRF via git credential verification endpoint","details":"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.","modified":"2026-09-19T03:30:36.623223057Z","published":"2026-09-15T11:00:51.698Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-918"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91923.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91923.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91923"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/kubesphere-through-4.1.3-ssrf-via-git-credential-verification-endpoint"},{"type":"REPORT","url":"https://github.com/kubesphere/kubesphere/issues/6653"},{"type":"PACKAGE","url":"https://github.com/kubesphere/kubesphere"},{"type":"ARTICLE","url":"https://github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3438862/config/ks-core/templates/globalroles.yaml"},{"type":"ARTICLE","url":"https://github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3438862/pkg/kapis/resources/v1alpha2/handler.go"},{"type":"ARTICLE","url":"https://github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3438862/pkg/models/git/git.go"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/kubesphere/kubesphere","events":[{"introduced":"0"},{"fixed":"3ef3a6bc98b790480577e87fbc75bee5b3438862"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"4.1.3"},{"fixed":"4.1.3"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["v4.1.3-rc.0","helm-chart-1.1.3","v4.1.2","helm-chart-1.1.2","v4.1.1","v3.4.0","v3.4.0-rc.0","v3.3.0-rc.3","v3.3.0","v3.3.0-rc.2","v3.3.0-rc.1","v3.3.0-rc.0","v3.3.0-alpha.1","v3.3.0-alpha.0","v3.2.0","v3.2.0-rc.1","v3.2.0-alpha.1","v3.2.0-alpha.0","v3.1.0","v3.1.0-alpha.0","v3.0.0","v2.1.0","advanced-2.0.2","advanced-2.0.0","advanced-1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-91923.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}