{"action":"Upgrade roundcube/roundcubemail to 1.7-rc5 or later.","affected":[{"fixed":"1.7-rc5","introduced":"1.7-beta"}],"component":"roundcube/roundcubemail","cve_ids":["CVE-2026-35540"],"ecosystem":"Packagist","epss":0.00401,"exploited":false,"fixed_versions":["1.7-rc5"],"ghsa_id":"GHSA-vxg2-hhgr-37fx","id":"tcs_01M5KF9J05A92JSEBFJRV5QWXT","modified_at":"2026-04-04T07:11:22.750123Z","published_at":"2026-04-03T06:31:32Z","references":["https://osv.dev/vulnerability/GHSA-vxg2-hhgr-37fx","https://nvd.nist.gov/vuln/detail/CVE-2026-35540","https://github.com/roundcube/roundcubemail/commit/27ec6cc9cb25e1ef8b4d4ef39ce76d619caa6870","https://github.com/roundcube/roundcubemail/commit/579b68eff90650a5c782e153debd66c765648942","https://github.com/roundcube/roundcubemail","https://github.com/roundcube/roundcubemail/releases/tag/1.6.14","https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5","https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14"],"severity":{"label":"medium","score":5.4},"sources":[{"source":"osv","source_id":"GHSA-vxg2-hhgr-37fx","url":"https://osv.dev/vulnerability/GHSA-vxg2-hhgr-37fx"}],"summary":"Roundcube Webmail: Insufficient CSS sanitization in HTML e-mail messages"}