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Case File

CVE-2021-26929

MEDIUM · CVSS 6.1 EPSS 4.94% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-02-14 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.1. It affects Java. 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

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

CVE
CVE-2021-26929
Severity
MEDIUM
CVSS
6.1
EPSS
4.94%
Java

Original NVD Description

An XSS issue was discovered in Horde Groupware Webmail Edition through 5.2.22 (where the Horde_Text_Filter library before 2.3.7 is used). The attacker can send a plain text e-mail message, with JavaScript encoded as a link or email that is mishandled by preProcess in Text2html.php, because bespoke use of \x00\x00\x00 and \x01\x01\x01 interferes with XSS defenses.

Related CVEs

Other vulnerabilities affecting the same vendor(s)