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CVE-2026-96890

8.8, high

GitHub Enterprise Server Server-Side Request Forgery Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
8.8, high high CVSS v3.1
EPSS, next 30 days
0.5% higher than 39.7% of scored CVEs
Exploitation
No public evidence
Published
6 Oct 202611 days ago

Description

A Server-Side Request Forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed a repository contributor to cause the appliance to issue requests to attacker-controlled internal hosts, which could be chained to achieve remote code execution on the appliance. The secret scanning validator for GCP service account credentials trusted the token endpoint embedded in a committed credential and issued a request to it without restricting the destination. Exploitation required an authenticated user with permission to push to a repository on an instance with GitHub Advanced Security and secret scanning validity checks enabled, a non-default configuration. This vulnerability affected GitHub Enterprise Server 3.20, 3.21, and 3.22 and was fixed in versions 3.20.9, 3.21.7, and 3.22.2. This vulnerability was reported through the GitHub Bug Bounty program.

Details

Vendor
GitHub
Product
Enterprise Server
Weakness
CWE-918 (opens in a new tab)
Status
Analyzed
Updated
9 Oct 2026
Assigner
product-cna@github.com

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

References 3

Advisories 3

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other GitHub CVEs

Every GitHub CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-77987 A server-side request forgery (SSRF) vulnerability was identified in the notebook viewer of GitHub Enterprise Server EPSS 0.9% 9.8, critical
  • CVE-2026-18730 GitHub Enterprise Server Server-Side Request Forgery Vulnerability EPSS 0.3% 7.4, high
  • CVE-2026-19118 GitHub Enterprise Server Time-of-Check Time-of-Use Race Condition Vulnerability EPSS 0.7% 7.5, high
  • CVE-2026-76851 GitHub Enterprise Server Server-Side Request Forgery Vulnerability EPSS 0.8% 8.8, high

Beyond this page

Is CVE-2026-96890 in your network?

This page tells you how dangerous CVE-2026-96890 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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    Find it before attackers do

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    Detect it if it's exploited

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.