SB2026082072 - Multiple vulnerabilities in Angular

Description

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error (CVE-ID: CVE-2026-46417)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to perform server-side request forgery.

The vulnerability exists due to improper input validation in hostname handling in @angular/platform-server when processing user-supplied hostnames. A remote attacker can supply a crafted hostname to perform server-side request forgery.

2) Cross-site scripting (CVE-ID: CVE-2026-50557)

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

CVSSv4: 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]

The vulnerability allows a remote attacker to execute arbitrary JavaScript in the target user's browser context.

The vulnerability exists due to improper element sanitization and validation in the Angular template preparser when compiling user-controlled templates with custom namespace prefixes. A remote attacker can inject a namespaced script element to execute arbitrary JavaScript in the target user's browser context.

The application must process user-controlled template input at runtime and must not separately sanitize that input before passing it to the Angular compiler.

Remediation

Install update from vendor's website.

References

• https://github.com/angular/angular/security/advisories/GHSA-rfh7-fxqc-q52v
• https://github.com/angular/angular/security/advisories/GHSA-f3m7-gqxr-g87x
• https://github.com/angular/angular/pull/68868