{"id":"CVE-2026-1456","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-1456","generatedAt":"2026-10-28T05:46:02.468Z","title":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.7 before 18.7.4, and 18.8 before 18.8.4 that could have allowed an unauthenticated user to cause denial of service through CPU exhaustion by submitting specially crafted…","description":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.7 before 18.7.4, and 18.8 before 18.8.4 that could have allowed an unauthenticated user to cause denial of service through CPU exhaustion by submitting specially crafted markdown files that trigger exponential processing in markdown preview.","published":"2026-02-11T12:16:05.000Z","lastModified":"2026-06-17T10:15:49.000Z","status":"Analyzed","sourceIdentifier":"cve@gitlab.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-770"],"affected":["gitlab/gitlab"],"epss":{"score":0.00423,"percentile":0.36442,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.42%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://about.gitlab.com/releases/2026/02/10/patch-release-gitlab-18-8-4-released/","tags":["Release Notes","Vendor Advisory"],"source":"cve@gitlab.com"},{"url":"https://gitlab.com/gitlab-org/gitlab/-/issues/587688","tags":["Broken Link","Issue Tracking"],"source":"cve@gitlab.com"},{"url":"https://hackerone.com/reports/3517928","tags":["Permissions Required"],"source":"cve@gitlab.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-1456","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."}