CVE-2026-62643
criticalIn Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or I…
Vendor / product: Roundcube — webmail
In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, 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. NOTE: this issue exists because of insufficient fixes for CVE-2026-35540 and CVE-2026-48843.
CVSS
10.0
10.0 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-07-14 16:17
Modified: 2026-10-24 21:10
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
roundcube / webmail ≥1.6.0 <1.6.17, ≥1.7.0 <1.7.2
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/roundcube/roundcubemail/commit/294c7da6e7284166f040cef8607b677d459e0786 cve@mitre.org
- https://github.com/roundcube/roundcubemail/commit/6d69e094d55d3a9a84dfb36edf6ca985311f0c1c cve@mitre.org
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.17 cve@mitre.org
- https://github.com/roundcube/roundcubemail/releases/tag/1.7.2 cve@mitre.org
- https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2 cve@mitre.org
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗