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CVE-2026-9312 is a critical server-side request forgery vulnerability in GitHub Enterprise Server affecting versions prior to 3.22, including fixed patch lines before 3.17.17, 3.18.11, 3.19.8, 3.20.4, and 3.21.2. The flaw exists in an upload endpoint where insufficient input validation on request parameters allowed an unauthenticated attacker to inject path traversal content and alter the intended request flow. By doing so, the attacker could cause the server to issue crafted requests to internal services and redirect internal API calls to unintended destinations. The issue is pre-authentication and network-reachable, making it exploitable without a valid account when the affected service is accessible.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical pre-authentication SSRF vulnerability in a GitHub Enterprise Server upload endpoint that could let a network-access attacker trigger internal HTTP requests and potentially expose credentials or configuration data.
A pre-authentication SSRF vulnerability in a GitHub Enterprise Server upload endpoint caused by insufficient input validation, allowing crafted requests to internal services and possible exposure of sensitive credentials.
A critical pre-authentication SSRF vulnerability in a GitHub Enterprise Server upload endpoint that could allow crafted requests to internal services and possible exposure of sensitive credentials.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.