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VULNERABILITIES

CVE-2026-35539 Details

Description

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. XSS exists because of insufficient HTML attachment sanitization in preview mode. A victim must preview a text/html attachment.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/roundcube/roundcubemail/commit/10a6d1fa8acac85c727b0a6ae4a6642bfa27bea1 [email protected]Patch
https://github.com/roundcube/roundcubemail/commit/1b30edf5369668c92fe91dae3d52e477c808aa4f [email protected]Patch
https://github.com/roundcube/roundcubemail/commit/d742954ccbcdee7020f8f2e7c49ce0fca5a0efab [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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')[email protected]

Affected Products

ProductVersions
roundcube webmail
< 1.5.14
>= 1.6.0, < 1.6.14

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-2026-35539
NVD Published Date:
Apr 3, 2026
NVD Last Modified:
Jul 24, 2026
Source:
[email protected]
CVE-2026-35539 Details - Not Deferred