Is CVE-2026-9312 actively exploited?

No active exploitation of CVE-2026-9312 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-9312 be exploited remotely?

Yes. CVE-2026-9312 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-9312?

CVE-2026-9312 has a CVSS score of 8.2 (HIGH).

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HIGH

CVE-2026-9312

CWE-918Published: May 27, 2026· Updated: Jun 2, 2026

8.2

CVSS v3.1

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 3.16.20, 3.17.17, 3.18.11, 3.19.8, 3.20.4, and 3.21.1. This vulnerability was reported via the GitHub Bug Bounty program.

NVD Source

Technical Analysis

CVE-2026-9312 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 8.2.