{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-35544","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","state":"PUBLISHED","assignerShortName":"mitre","dateReserved":"2026-04-03T03:59:48.463Z","datePublished":"2026-04-03T03:59:49.053Z","dateUpdated":"2026-04-03T12:50:12.338Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Webmail","vendor":"Roundcube","versions":[{"lessThan":"1.5.14","status":"affected","version":"0","versionType":"semver"},{"lessThan":"1.6.14","status":"affected","version":"1.6.0","versionType":"semver"}]}],"descriptions":[{"lang":"en","value":"An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to a fixed-position mitigation bypass via the use of !important."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-669","description":"CWE-669 Incorrect Resource Transfer Between Spheres","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre","dateUpdated":"2026-04-03T03:59:49.053Z"},"references":[{"url":"https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14"},{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5"},{"url":"https://github.com/roundcube/roundcubemail/commit/226811a1c974271dbedca72672923abaff8191c0"},{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.6.14"},{"url":"https://github.com/roundcube/roundcubemail/commit/099009b9c8e1d3c636fb9a5af72f7c2596018662"},{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.5.14"},{"url":"https://github.com/roundcube/roundcubemail/commit/57dec0c127b98e0c8e3b9c26c80049b9c4bcaea7"}],"x_generator":{"engine":"CVE-Request-form 0.0.1"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-03T12:50:06.228941Z","id":"CVE-2026-35544","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-03T12:50:12.338Z"}}]}}