CVE-2026-34601: xmldom: XML injection via unsafe CDATA serialization allows attacker-controlled markup insertion

Overview

Severity

High (CVSS 7.5)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploit Status

Not Exploited

Patch Tuesday

2026-Apr

Released

2026-04-04

EPSS Score

0.04% (percentile: 12.6%)

Affected Products (2)

Other

• 19693-17084
• 19712-17086

Revision History

• 2026-04-04: Information published.