{"id":"CVE-2026-35540","details":"An issue was discovered in Roundcube Webmail 1.6.0 before 1.6.14. Insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts.","aliases":["GHSA-vxg2-hhgr-37fx"],"modified":"2026-07-27T03:56:26.744135026Z","published":"2026-04-03T03:47:51.456Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35540.json","cna_assigner":"mitre","cwe_ids":["CWE-669"]},"references":[{"type":"WEB","url":"https://github.com/roundcube/roundcubemail/releases/tag/1.6.14"},{"type":"WEB","url":"https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5"},{"type":"WEB","url":"https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35540.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35540"},{"type":"FIX","url":"https://github.com/roundcube/roundcubemail/commit/27ec6cc9cb25e1ef8b4d4ef39ce76d619caa6870"},{"type":"FIX","url":"https://github.com/roundcube/roundcubemail/commit/579b68eff90650a5c782e153debd66c765648942"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/roundcube/roundcubemail","events":[{"introduced":"993b888afe29c383bf45c84f17090f4db96367ba"},{"fixed":"27ec6cc9cb25e1ef8b4d4ef39ce76d619caa6870"},{"fixed":"579b68eff90650a5c782e153debd66c765648942"},{"fixed":"8e4a99b0746577c2928f5ae984b3ab533b970ca0"}],"database_specific":{"extracted_events":[{"introduced":"1.6.0"},{"fixed":"1.6.14"}],"source":["CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*"}}],"versions":["1.6.13","1.6.12","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"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-35540.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"}]}