CVE-2026-9312 Server-side request forgery in Enterprise Server

Critical 9.2 Published 27 May 2026 Updated 30 Jun 2026

Unauthenticated attackers can exploit path traversal in an upload endpoint to perform SSRF, accessing internal services and exposing sensitive credentials.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-9312?

CVE-2026-9312 is a critical server-side request forgery vulnerability in Github Enterprise Server, published on 27 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A server-side request forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to send crafted requests to internal services by exploiting insufficient input validation in an upload endpoint. By injecting path traversal content into request parameters, an attacker could bypass the intended request flow and redirect internal API calls, potentially accessing internal services and exposing sensitive credentials. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was fixed in versions 3.17.17, 3.18.11, 3.19.8, 3.20.4, and 3.21.2. This vulnerability was reported via the GitHub Bug Bounty program.

Weakness: CWE-918

Which versions are affected by CVE-2026-9312?

It affects 1 product.

Products include Github Enterprise Server.

How do I fix CVE-2026-9312?

No fix has been published for CVE-2026-9312 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2026-9312 being exploited?

There is no known exploitation of CVE-2026-9312 in the wild and no public exploit code.

All Github Enterprise Server vulnerabilities

Sources

Also known as GHSA-fwfp-h68w-2hcr.