AUGUST 4, 2026
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Case File

CVE-2026-35539

MEDIUM · CVSS 6.1 EPSS 0.25% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-04-03 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.1. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-35539
Severity
MEDIUM
CVSS
6.1
EPSS
0.25%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)

CVE-2026-54433 HIGH CVE-2026-62644 MEDIUM CVE-2026-62643 HIGH CVE-2026-62642 MEDIUM CVE-2026-62641 MEDIUM CVE-2026-35545 MEDIUM