CVE-2026-9312 GitHub — Exploit & Vulnerability Details CRITICAL

Parameter	Value
CVSS	9.2 (CRITICAL)
Affected Versions	3.16.0 — 3.20.3
Fixed In	3.16.19
Type	CWE-918 (Server-Side Request Forgery (SSRF))
Vendor	GitHub
Public PoC	No

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.

Attack Parameters

Attack Vector

Network

Can be exploited remotely

Attack Complexity

High

Difficult to exploit

Attack Requirements

Present

Additional conditions required

Privileges Required

None

No privileges needed

User Interaction

None

No user interaction needed

Impact Assessment

Confidentiality

High

Complete data leak

Integrity

High

Complete data modification

Availability

High

Complete denial of service

CVSS Vector v4.0

Weakness Type (CWE)

CWE-918 Server-Side Request Forgery (SSRF)

Vulnerable Products 6

Configuration	From (including)	Up to (excluding)
Github Enterprise_Server cpe:2.3:a:github:enterprise_server::::::::	`3.16.0`	`3.16.19`
Github Enterprise_Server cpe:2.3:a:github:enterprise_server::::::::	`3.17.0`	`3.17.16`
Github Enterprise_Server cpe:2.3:a:github:enterprise_server::::::::	`3.18.0`	`3.18.10`
Github Enterprise_Server cpe:2.3:a:github:enterprise_server::::::::	`3.19.0`	`3.19.7`
Github Enterprise_Server cpe:2.3:a:github:enterprise_server::::::::	`3.20.0`	`3.20.3`
Github Enterprise_Server cpe:2.3:a:github:enterprise_server:3.21.1:rc1::::::	—	—