CVE-2026-35540
- State
- Published
- Severity
- 5.4 Medium
- Published
- Apr 3, 2026
- Updated
- Apr 3, 2026
- Reserved
- Apr 3, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N | mitre |
Weaknesses
- CWE-669 Incorrect Resource Transfer Between Spheres
Affected Products
| Product | Versions |
|---|---|
WebmailRoundcube |
|
References
- https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14
- https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5
- https://github.com/roundcube/roundcubemail/commit/579b68eff90650a5c782e153debd66c765648942
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.14
- https://github.com/roundcube/roundcubemail/commit/27ec6cc9cb25e1ef8b4d4ef39ce76d619caa6870
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