{"affected":[{"defaultStatus":"unaffected","product":"Webmail","source":"CNA: mitre","vendor":"Roundcube","versions":[{"lessThan":"1.6.20","status":"affected","version":"1.6.0","versionType":"semver"},{"lessThan":"1.7.5","status":"affected","version":"1.7.0","versionType":"semver"}]}],"cveId":"CVE-2026-114731","cwes":["CWE-770"],"description":"Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an uncontrolled resource consumption vulnerability in the CSS proxy (the utils/modcss action). The fetched stylesheet was read into memory in full, with no size limit and no read timeout, so a stylesheet URL referencing an attacker-controlled host could be used to exhaust server memory. Upstream fixed this in the commit “Add a size limit to the CSS proxy content processing”, which caps the response at 5 MB, reads it as a stream and applies a read timeout.","epss":{"date":"2026-11-02","percentile":0.37486,"score":0.00432},"exploits":[],"kev":null,"metrics":[{"score":5.3,"severity":"medium","source":"CNA: mitre","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},{"score":5.3,"severity":"medium","source":"NVD: cve@mitre.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"}],"modifiedAt":1793636248430,"publishedAt":1792635154577,"references":[{"source":"CNA: mitre","tags":["issue-tracking","third-party-advisory"],"url":"https://bugs.debian.org/1151279"},{"source":"CNA: mitre","tags":["patch"],"url":"https://github.com/roundcube/roundcubemail/commit/2c9f6da692fa37cad2aaf85d5b127b583d22b264"},{"source":"CNA: mitre","tags":["vendor-advisory","release-notes"],"url":"https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5"},{"source":"CNA: mitre","tags":["release-notes","patch"],"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.7.5"},{"source":"CNA: mitre","tags":["release-notes","patch"],"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.6.20"},{"source":"CNA: mitre","tags":["patch"],"url":"https://github.com/roundcube/roundcubemail/commit/99a5bdd05b01f45493cc0da4c96968eac7668126"},{"source":"cve@mitre.org","tags":[],"url":"https://bugs.debian.org/1151279"},{"source":"cve@mitre.org","tags":[],"url":"https://github.com/roundcube/roundcubemail/commit/2c9f6da692fa37cad2aaf85d5b127b583d22b264"},{"source":"cve@mitre.org","tags":[],"url":"https://github.com/roundcube/roundcubemail/commit/99a5bdd05b01f45493cc0da4c96968eac7668126"},{"source":"cve@mitre.org","tags":[],"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.6.20"},{"source":"cve@mitre.org","tags":[],"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.7.5"},{"source":"cve@mitre.org","tags":[],"url":"https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5"}],"remediation":[{"kind":"fix","source":"CNA: mitre","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/roundcube/roundcubemail/commit/2c9f6da692fa37cad2aaf85d5b127b583d22b264"},{"kind":"fix","source":"CNA: mitre","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/roundcube/roundcubemail/releases/tag/1.7.5"},{"kind":"fix","source":"CNA: mitre","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/roundcube/roundcubemail/releases/tag/1.6.20"},{"kind":"fix","source":"CNA: mitre","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/roundcube/roundcubemail/commit/99a5bdd05b01f45493cc0da4c96968eac7668126"}],"revision":"8e4ff218cbd1208973583599832b95513521ad5746bed7434a7d83c5e1cdfef2","sources":[{"modifiedAt":1793635132667,"name":"CNA: mitre","retrievedAt":1793639332346,"url":"https://www.cve.org/CVERecord?id=CVE-2026-114731"},{"modifiedAt":1793636248430,"name":"NVD","retrievedAt":1793643412366,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114731"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793635724737,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-114731"}],"ssvc":{"assessedAt":1793635124079,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"CVE-2026-114731","updatedAt":1793643412366}