CVE-2026-39823: Bypass of meta content URL escaping causes XSS in html/template

Overview

Severity

Medium (CVSS 6.1)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-May

Released

2026-05-10

EPSS Score

0.01% (percentile: 2.2%)

Affected Products (2)

Other

• 21203-17084
• 21206-17084

Revision History

• 2026-05-10: Information published.