{"id":"CVE-2026-114731","details":"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.","modified":"2026-10-22T10:46:18.566113270Z","published":"2026-10-22T02:12:34.577Z","database_specific":{"cna_assigner":"mitre","cwe_ids":["CWE-770"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114731.json","unresolved_ranges":[{"extracted_events":[{"range":[{"introduced":"1.6.0"},{"fixed":"1.6.20"},{"introduced":"1.7.0"},{"fixed":"1.7.5"}],"source":"AFFECTED_FIELD","strategy":"StandardRange"}]},{"extracted_events":[{"source":"CPE_FIELD","strategy":"CPEApplicability","range":[{"introduced":"1.6.0"},{"fixed":"1.6.20"},{"introduced":"1.7.0"},{"fixed":"1.7.5"}]}]},{"extracted_events":[{"range":[{"fixed":"1.6.20"},{"introduced":"1.7.x"},{"fixed":"1.7.5"}],"source":"DESCRIPTION"}]}]},"references":[{"type":"REPORT","url":"https://bugs.debian.org/1151279"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114731.json"},{"type":"WEB","url":"https://github.com/roundcube/roundcubemail/"},{"type":"FIX","url":"https://github.com/roundcube/roundcubemail/commit/2c9f6da692fa37cad2aaf85d5b127b583d22b264"},{"type":"FIX","url":"https://github.com/roundcube/roundcubemail/commit/99a5bdd05b01f45493cc0da4c96968eac7668126"},{"type":"FIX","url":"https://github.com/roundcube/roundcubemail/releases/tag/1.6.20"},{"type":"FIX","url":"https://github.com/roundcube/roundcubemail/releases/tag/1.7.5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114731"},{"type":"ADVISORY","url":"https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/roundcube/roundcubemail","events":[{"introduced":"0"},{"fixed":"2c9f6da692fa37cad2aaf85d5b127b583d22b264"},{"fixed":"26d1b077f0c910a16c44c1862fe26e15f0bb3685"},{"fixed":"1dd910522e73318447ed6e20bed1efd7adeb240a"},{"fixed":"99a5bdd05b01f45493cc0da4c96968eac7668126"}],"database_specific":{"extracted_events":[{"range":[{"fixed":"2c9f6da692fa37cad2aaf85d5b127b583d22b264"}],"source":"REFERENCES_COMMIT"},{"original_tag":"1.7.5","range":[{"fixed":"26d1b077f0c910a16c44c1862fe26e15f0bb3685"}],"source":"REFERENCES_TAG"},{"original_tag":"1.6.20","range":[{"fixed":"1dd910522e73318447ed6e20bed1efd7adeb240a"}],"source":"REFERENCES_TAG"},{"source":"REFERENCES_COMMIT","range":[{"fixed":"99a5bdd05b01f45493cc0da4c96968eac7668126"}]}]}}],"versions":["1.7.4","1.6.19","1.7.3","1.6.18","1.6.17","1.7.2","1.6.16","1.7.1","1.7.0","1.7-rc6","1.6.15","1.7-rc5","1.6.14","1.7-rc4","1.6.13","1.7-rc3","1.7-rc2","1.6.12","1.7-rc","1.7-beta2","1.7-beta","1.6.11","1.6.10","1.6.9","1.6.8","1.6.7","1.6.6","1.6.5","1.6.4","1.6.3","1.6.2","1.6.1","1.6.0","1.6-rc","1.6-beta","1.5-rc","1.5-beta","1.4-rc2","1.4-rc1","1.4-beta","1.3-beta","1.2-rc","1.2-beta","1.1.0","1.1-rc","1.1-beta","v0.1-beta2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-114731.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}