What’s Vulnerable › Vulnerabilities

CVE-2026-69151: Angular i18n: Cross-Site Scripting (XSS) via event-handler attributes

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-03 · updated 2026-08-11
• Weakness: CWE-79

Description

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.27, 21.2.19, and 22.0.1, the Angular compiler i18n pipeline permits i18n-onerror and other i18n-on event-handler attributes, allowing a lower-trust translation file to replace a static handler with executable JavaScript. This issue is fixed in versions 20.3.27, 21.2.19, and 22.0.1.

Affected products

• angular: through 19.2.25; from 20.0.0 before 20.3.27; from 21.0.0 before 21.2.19; from 22.0.0 before 22.0.1 — fixed in 20.3.27, 21.2.19, 22.0.1

How to fix

Upgrade to a fixed version: angular 20.3.27, 21.2.19, 22.0.1. Check the vendor advisory for mitigations.

References

• https://github.com/angular/angular/commit/417a4071a776464d549509ed3aec121dbd2fda5e
• https://github.com/angular/angular/commit/6c41f5ca01c0ae045fc7d929b72853a11eb55865
• https://github.com/angular/angular/pull/68821
• https://github.com/angular/angular/pull/69306
• https://github.com/angular/angular/security/advisories/GHSA-jj27-h5hq-8x99

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