{"id":"CVE-2026-1456","aliases":["BIT-gitlab-2026-1456","EUVD-2026-7048","GHSA-w487-9r9p-6p96","UBUNTU-CVE-2026-1456"],"status":"published","title":"Allocation of Resources Without Limits or Throttling in GitLab","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.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00433,"percentile":0.37912,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-770"],"published":"2026-02-11T11:04:15Z","modified":"2026-10-30T10:47:17Z","fixes":[{"ecosystem":"Bitnami","package":"gitlab","fixed_in":["18.7.4","18.8.4"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"gitlab","ranges":[{"type":"SEMVER","events":[{"introduced":"18.7.0"},{"fixed":"18.7.4"},{"introduced":"18.8.0"},{"fixed":"18.8.4"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"gitlab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.4.3+dfsg-9","8.4.3+dfsg-12","8.5.8+dfsg-5"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"gitlab-agent","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["14.1.0-1","16.1.3-2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"gitlab-agent","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["16.1.3-2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"gitlab-agent","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["16.1.3-2build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"gitlab-agent","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["16.1.3-2","16.1.3-2build1"]}],"products":[{"vendor":"gitlab","product":"gitlab"}],"references":[{"url":"https://gitlab.com/gitlab-org/gitlab/-/issues/587688","tags":["issue-tracking","permissions-required","Broken Link","Issue Tracking","report"]},{"url":"https://hackerone.com/reports/3517928","tags":["technical-description","exploit","permissions-required","Permissions Required","web","report"]},{"url":"https://about.gitlab.com/releases/2026/02/10/patch-release-gitlab-18-8-4-released/","tags":["Release Notes","Vendor Advisory","advisory","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1456","tags":["web","advisory"]},{"url":"https://about.gitlab.com/releases/2026/02/10/patch-release-gitlab-18-8-4-released"},{"url":"https://github.com/advisories/GHSA-w487-9r9p-6p96"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1456.json","tags":["advisory"]},{"url":"git://git@gitlab.com:gitlab-org/gitlab.git","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-1456","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-1456","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-1456","title":"Allocation of Resources Without 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