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CVE-2026-62643
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.
10.0 CRITICALEPSS 0.29%Not in KEVNVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 10.0 | CRITICAL | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N |
| 7.2 | HIGH | 3.1mitre (CNA) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Details
- CVE ID
- CVE-2026-62643
- Status
- Analyzed
- Assigner (CNA)
- mitre
- Published
- Jul 14, 2026
- Last modified
- 2026-10-24 21:10 UTC
- Weaknesses
- CWE-918 · Server-Side Request Forgery (SSRF)
Affected Products
As published by the CNA in the CVE record.
RoundcubeWebmail2 version ranges
- 1.6.0 before 1.6.17
- 1.7.0 before 1.7.2
References
- github.com https://github.com/roundcube/roundcubemail/commit/294c7da6e7284166f040cef8607b677d459e0786
- github.com https://github.com/roundcube/roundcubemail/commit/6d69e094d55d3a9a84dfb36edf6ca985311f0c1c
- github.com https://github.com/roundcube/roundcubemail/releases/tag/1.6.17
- github.com https://github.com/roundcube/roundcubemail/releases/tag/1.7.2
- roundcube.net https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2