{"id":"CVE-2017-18365","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-18365","generatedAt":"2026-10-28T20:25:50.397Z","title":"The Management Console in GitHub Enterprise 2.8.x before 2.8.7 has a deserialization issue that allows unauthenticated remote attackers to execute arbitrary code.","description":"The Management Console in GitHub Enterprise 2.8.x before 2.8.7 has a deserialization issue that allows unauthenticated remote attackers to execute arbitrary code. This occurs because the enterprise session secret is always the same, and can be found in the product's source code. By sending a crafted cookie signed with this secret, one can call Marshal.load with arbitrary data, which is a problem because the Marshal data format allows Ruby objects.","published":"2019-03-28T06:29:00.000Z","lastModified":"2026-06-17T01:12:42.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-502"],"affected":["github/github"],"epss":{"score":0.21238,"percentile":0.9758,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.18916,"percentile":0.97233},{"date":"2026-09-22","score":0.21238,"percentile":0.97483}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 21.2%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://enterprise.github.com/releases/2.8.7/notes","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.exablue.de/blog/2017-03-15-github-enterprise-remote-code-execution.html","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://enterprise.github.com/releases/2.8.7/notes","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exablue.de/blog/2017-03-15-github-enterprise-remote-code-execution.html","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-18365","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."}