---
title: "CVE-2026-91923: KubeSphere - Server-Side Request Forgery"
description: "KubeSphere through 4.1.3 contains a server-side request forgery caused by unvalidated URLs in the git credential verification endpoint, letting authenticated attackers reach internal services and exfiltrate credentials, exploit requires authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-91923/
---

# CVE-2026-91923 KubeSphere - Server-Side Request Forgery

KubeSphere through 4.1.3 contains a server-side request forgery caused by unvalidated URLs in the git credential verification endpoint, letting authenticated attackers reach internal services and exfiltrate credentials, exploit requires authentication.

CVSS base score 7.7 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.45% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-91923)

## Details

Type

Server-Side Request Forgery

Impact

Information Disclosure, Server Side Request Forgery

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Published

15 September 2026

Updated

15 October 2026

Weakness

[CWE-918](https://cwe.mitre.org/data/definitions/918.html)

## Vendor fix

Update to the latest version beyond 4.1.3.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-91923](https://nvd.nist.gov/vuln/detail/CVE-2026-91923)
- [https://github.com/kubesphere/kubesphere](https://github.com/kubesphere/kubesphere)
- [https://github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3438862/config/ks-core/templates/globalroles.yaml](https://github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3438862/config/ks-core/templates/globalroles.yaml)
- [https://github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3438862/pkg/kapis/resources/v1alpha2/handler.go](https://github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3438862/pkg/kapis/resources/v1alpha2/handler.go)
- [https://github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3438862/pkg/models/git/git.go](https://github.com/kubesphere/kubesphere/blob/3ef3a6bc98b790480577e87fbc75bee5b3438862/pkg/models/git/git.go)
- [https://github.com/kubesphere/kubesphere/issues/6653](https://github.com/kubesphere/kubesphere/issues/6653)
- [https://www.vulncheck.com/advisories/kubesphere-through-4.1.3-ssrf-via-git-credential-verification-endpoint](https://www.vulncheck.com/advisories/kubesphere-through-4.1.3-ssrf-via-git-credential-verification-endpoint)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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