Cross-site scripting in Angular - CVE-2026-50555
Published: September 11, 2026
Vulnerability identifier: #VU149004
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-50555
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary script in a user\'s browser.
The vulnerability exists due to a Unicode index alignment error in domino\'s closing-tag escaping logic when serializing user-controlled dynamic text in raw-text elements during server-side rendering. A remote attacker can supply dynamic text containing an astral Unicode character and a closing tag to execute arbitrary script in a user\'s browser.
User interaction is required to visit the rendered page.
Affected software
Angular
How to mitigate CVE-2026-50555
Install security update from vendor's website.
Angular - addressed in versions 19.2.25, 20.3.24, 21.2.16, 22.0.0