SB2026022601 - Cross-site scripting in in Angular i18n support

Description

This security bulletin contains information about 1 vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2026-27970)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the Angular internationalization (i18n) pipeline. A remote attacker can pass specially crafted ICU messages to the application and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Remediation

Install update from vendor's website.

References

• https://github.com/angular/angular/security/advisories/GHSA-prjf-86w9-mfqv
• https://github.com/angular/angular/pull/67183