CVE-2026-91923CWE-918ssrf

CVE-2026-91923

High · published September 15, 2026

CVSS v3.1
7.7
EPSS
0%
Percentile
38.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
8.3 · 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
0.00454 · 38.5th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-09-15T15:17Z
References (6)
https://github.com/kubesphere/kubesphere · [email protected]https://github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3438862/config/ks-core/templates/globalroles.yaml · [email protected]https://github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3438862/pkg/kapis/resources/v1alpha2/handler.go · [email protected]https://github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3438862/pkg/models/git/git.go · [email protected]https://github.com/kubesphere/kubesphere/issues/6653 · [email protected]https://www.vulncheck.com/advisories/kubesphere-through-4.1.3-ssrf-via-git-credential-verification-endpoint · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 15 SEP 11:00Z
    KubeSphere through 4.1.3 SSRF via git credential verification endpoint
    cvelistv5