{"id":"CVE-2026-3306","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-3306","generatedAt":"2026-10-28T03:23:59.755Z","title":"An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed a user with read access to a repository and write access to a project to modify issue and pull request metadata through the project.","description":"An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed a user with read access to a repository and write access to a project to modify issue and pull request metadata through the project. When adding an item to a project that already existed, column value updates were applied without verifying the actor's repository write permissions. This vulnerability was reported via the GitHub Bug Bounty program and has been fixed in GitHub Enterprise Server versions 3.14.24, 3.15.19, 3.16.15, 3.17.12, 3.18.6 and 3.19.3.","published":"2026-03-10T18:19:01.000Z","lastModified":"2026-06-17T10:43:23.000Z","status":"Analyzed","sourceIdentifier":"product-cna@github.com","cvss":{"version":"4.0","score":5.3,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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":0.00367,"percentile":0.30268,"date":"2026-10-26","history":[]},"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 (0.37%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.24","tags":["Release Notes"],"source":"product-cna@github.com"},{"url":"https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.19","tags":["Release Notes"],"source":"product-cna@github.com"},{"url":"https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.15","tags":["Release Notes"],"source":"product-cna@github.com"},{"url":"https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.12","tags":["Release Notes"],"source":"product-cna@github.com"},{"url":"https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.6","tags":["Release Notes"],"source":"product-cna@github.com"},{"url":"https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.3","tags":["Release Notes"],"source":"product-cna@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-3306","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."}