{"id":"CVE-2026-75101","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-75101","generatedAt":"2026-10-28T03:58:13.500Z","title":"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.","description":"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.","published":"2026-09-22T21:17:31.000Z","lastModified":"2026-10-02T18:46:48.000Z","status":"Analyzed","sourceIdentifier":"product-cna@github.com","cvss":{"version":"4.0","score":6,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-639"],"affected":["github/enterprise server"],"epss":{"score":0.00286,"percentile":0.20985,"date":"2026-10-27","history":[{"date":"2026-09-23","score":0.00449,"percentile":0.38403}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.29%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-22T21:17:31.000Z","detail":{"score":"6.0","severity":"MEDIUM","publishedAt":"2026-09-22T21:17:31.253Z"},"summary":"New CVE, medium severity (CVSS 6.0)."}],"references":[{"url":"https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.21","tags":["Release Notes","Vendor Advisory"],"source":"product-cna@github.com"},{"url":"https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.15","tags":["Release Notes","Vendor Advisory"],"source":"product-cna@github.com"},{"url":"https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.12","tags":["Release Notes","Vendor Advisory"],"source":"product-cna@github.com"},{"url":"https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.8","tags":["Release Notes","Vendor Advisory"],"source":"product-cna@github.com"},{"url":"https://docs.github.com/en/enterprise-server@3.21/admin/release-notes#3.21.6","tags":["Release Notes","Vendor Advisory"],"source":"product-cna@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-75101","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}