CVE-2026-9312
HighCVSS 8.2Exploitation Probability (EPSS)
Very high risk93th percentile - higher than 93% of all known CVEs
Summary
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.
Risk Assessment
The risk involves unauthorized access to internal services and exposure of sensitive credentials, which could lead to further attacks and compromise of the entire infrastructure.
Recommendation
Immediately upgrade GitHub Enterprise Server to version 3.17.17, 3.18.11, 3.19.8, 3.20.4, 3.21.2 or later to remediate the vulnerability.
Original NVD description (English source)
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.