Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2026-35544 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://github.com/roundcube/roundcubemail/commit/099009b9c8e1d3c636fb9a5af72f7c2596018662 [email protected]Patch
https://github.com/roundcube/roundcubemail/commit/226811a1c974271dbedca72672923abaff8191c0 [email protected]Patch
https://github.com/roundcube/roundcubemail/commit/57dec0c127b98e0c8e3b9c26c80049b9c4bcaea7 [email protected]Patch
https://github.com/roundcube/roundcubemail/releases/tag/1.5.14 [email protected]Release Notes
https://github.com/roundcube/roundcubemail/releases/tag/1.6.14 [email protected]Release Notes

see all 7 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-669Incorrect Resource Transfer Between Spheres[email protected]

Affected Products

ProductVersions
roundcube webmail
<= 1.5.13
>= 1.6.0, <= 1.6.13

CPE

  • cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-35544
NVD Published Date:
Apr 3, 2026
NVD Last Modified:
Jul 24, 2026
Source:
[email protected]
CVE-2026-35544 Details - Not Deferred