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.

INFO

Published Date :

2026-04-03T03:39:17.400Z

Last Modified :

2026-04-03T03:39:17.400Z

Source :

mitre
AFFECTED PRODUCTS

The following products are affected by CVE-2026-35539 vulnerability.

Vendors Products
Roundcube
  • Webmail
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-35539.

URL Resource
https://github.com/roundcube/roundcubemail/commit/10a6d1fa8acac85c727b0a6ae4a6642bfa27bea1 cve-icon cve-icon
https://github.com/roundcube/roundcubemail/commit/1b30edf5369668c92fe91dae3d52e477c808aa4f cve-icon cve-icon
https://github.com/roundcube/roundcubemail/commit/d742954ccbcdee7020f8f2e7c49ce0fca5a0efab cve-icon cve-icon
https://github.com/roundcube/roundcubemail/releases/tag/1.5.14 cve-icon cve-icon
https://github.com/roundcube/roundcubemail/releases/tag/1.6.14 cve-icon cve-icon
https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5 cve-icon cve-icon
https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
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Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact