CVEvulnerability
CVE-2026-35540
6.5 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-04-03
- Last modified
- 2026-07-24
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.4 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Weaknesses
- CWE-669
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.
Affected configurations
• roundcube webmail (>= 1.6.0 < 1.6.14)
Related
Weakness · CWE (1)
- CWE-669 Incorrect Resource Transfer Between Spheres weakness
References
- https://github.com/roundcube/roundcubemail/commit/27ec6cc9cb25e1ef8b4d4ef39ce76d619caa6870 Patch
- https://github.com/roundcube/roundcubemail/commit/579b68eff90650a5c782e153debd66c765648942 Patch
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.14 Release Notes
- https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5 Release Notes
- https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14 Vendor Advisory