{"id":"CVE-2026-48843","published":"2026-05-25T19:11:04Z","modified":"2026-05-26T12:50:42Z","title":"Roundcube Webmail 1.6.x between 1.6.14 and 1.6.16,and 1.7.x before 1.7.1 has Insufficient Cascading Style Sheets (CSS)…","vendor":"Roundcube","product":"Webmail","tier":"tail","description":{"text":"Roundcube Webmail 1.6.x between 1.6.14 and 1.6.16,and 1.7.x before 1.7.1 has 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. The issue stems from an insufficient fix for CVE-2026-35540.","provenance":"source","from":"CVE.org"},"cvss":{"score":7.2,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00268,"percentile":0.18907,"provenance":"source"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"}],"references":[{"url":"https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1","tags":[]},{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.7.1","tags":[]},{"url":"https://github.com/roundcube/roundcubemail/commit/ab96c88bfd888866ec5e02190b19618db283923a","tags":[]},{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.6.16","tags":[]},{"url":"https://github.com/roundcube/roundcubemail/commit/cb3fc9041e91640ba9ba49ee7b2147c176ebf5a1","tags":[]}],"priority":{"score":8.8,"factors":[{"name":"EPSS percentile","points":3.78},{"name":"CVSS severity","points":5.04}]},"vendorSlug":"roundcube","affectedVersions":[{"vendor":"Roundcube","product":"Webmail","versions":[">= 1.6.14, < 1.6.16",">= 1.7.0, < 1.7.1"]}],"euvd":{"id":"EUVD-2026-31718","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-roundcube-webmail-cve-2026-35540","parents":[{"from":"CVE-2026-35540","to":"CVE-2026-48843","relation":"incomplete-fix","confidence":"high","kind":"lineage","evidence":[{"kind":"text","provenance":"source","relation":"incomplete-fix","quote":"The issue stems from an insufficient fix for CVE-2026-35540.","from":"CVE.org","in":"CVE-2026-48843"}]}],"children":[{"from":"CVE-2026-48843","to":"CVE-2026-62643","relation":"incomplete-fix","confidence":"high","kind":"lineage","evidence":[{"kind":"text","provenance":"source","relation":"incomplete-fix","quote":"NOTE: this issue exists because of insufficient fixes for CVE-2026-35540 and CVE-2026-48843.","from":"CVE.org","in":"CVE-2026-62643"},{"kind":"similar","provenance":"machine","score":0.92,"basis":"same product + CWE + description similarity"}]},{"from":"CVE-2026-48843","to":"CVE-2026-75006","relation":"incomplete-fix","confidence":"high","kind":"lineage","evidence":[{"kind":"text","provenance":"source","relation":"incomplete-fix","quote":"This issue exists because of insufficient fixes for CVE-2026-35540, CVE-2026-48843 and CVE-2026-62643.","from":"CVE.org","in":"CVE-2026-75006"},{"kind":"similar","provenance":"machine","score":0.93,"basis":"same product + CWE + description similarity"}]}]}}