CVEvulnerability
CVE-2026-74998
7.2 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-08-17
- Last modified
- 2026-09-08
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.2 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weaknesses
- CWE-79
Description
In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, responses from the CSS (Cascading Style Sheets) proxy were not validated, which may result in information disclosure or XSS (cross-site scripting) via MIME sniffing.
Affected configurations
• roundcube webmail (>= 1.6.0 < 1.6.18)
• roundcube webmail (>= 1.7.0 < 1.7.3)
Related
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- https://github.com/roundcube/roundcubemail/commit/62d33c8a0dc3fd0dd03984220dc9709e8e0de43b Patch
- https://github.com/roundcube/roundcubemail/commit/a2334990c02f7cb77b1a8d6fa97fcd9e1b5cd1fb Patch
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.18 Release Notes
- https://github.com/roundcube/roundcubemail/releases/tag/1.7.3 Release Notes
- https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3 Vendor Advisory