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CVE-2026-75101

Enterprise Server · Vulnerability

CVSS 4.0 6.0 MEDIUMCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-75101

Published

An authorization bypass vulnerability was identified in GitHub Enterprise Server that allowed any authenticated user of the instance to read the raw diff or patch of pull requests in private repositories without authorization. Access tokens for raw pull request diffs and patches were scoped to the repository name and pull request number rather than to a globally unique repository identifier, so an attacker who created a repository and pull request matching a target's repository name and pull request number could use a token for their own repository to retrieve the private pull request's contents. Exploitation required the attacker to know the target repository's name and a valid pull request number. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was fixed in versions 3.17.21, 3.18.15, 3.19.12, 3.20.8, and 3.21.6. This vulnerability was reported via the GitHub Bug Bounty program.

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23 Oct 2026 15:48:27 UTC

Authorization bypass vulnerability in GitHub Enterprise Server allowed reading of private pull request diffs and patches via repository name collision

cve-program · CVE-2026-75101 · Published

ChangeIntel

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Sources read 12 Nov 18:36 UTC · 273 of 275 readable · 271 fully read · documentation 469/469 current

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