CVE-2026-35544

Published: Apr 03, 2026 Last Modified: Apr 03, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 5,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: low
Availability: none

Description

AI Translation Available

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to a fixed-position mitigation bypass via the use of !important.

669

Incorrect Resource Transfer Between Spheres

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity
Potential Impacts:
Read Application Data Modify Application Data Unexpected State
Applicable Platforms
All platforms may be affected
View CWE Details
https://github.com/roundcube/roundcubemail/commit/099009b9c…
https://github.com/roundcube/roundcubemail/commit/099009b9c8e1d3c636fb9a5af72f7…
https://github.com/roundcube/roundcubemail/commit/226811a1c…
https://github.com/roundcube/roundcubemail/commit/226811a1c974271dbedca72672923…
https://github.com/roundcube/roundcubemail/commit/57dec0c12…
https://github.com/roundcube/roundcubemail/commit/57dec0c127b98e0c8e3b9c26c8004…
https://github.com/roundcube/roundcubemail/releases/tag/1.5…
https://github.com/roundcube/roundcubemail/releases/tag/1.5.14
https://github.com/roundcube/roundcubemail/releases/tag/1.6…
https://github.com/roundcube/roundcubemail/releases/tag/1.6.14
https://github.com/roundcube/roundcubemail/releases/tag/1.7…
https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5
https://roundcube.net/news/2026/03/18/security-updates-1.7-…
https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14