Update dependency @angular/compiler to v21.2.19 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@angular/compiler (source)	21.2.17 → 21.2.19

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

CVE-2026-69151 / GHSA-jj27-h5hq-8x99

More information

Details

A Cross-Site Scripting (XSS) vulnerability has been identified in the Angular compiler's internationalization (i18n) pipeline. Although Angular disallows binding to event-handler attributes such as onclick and onerror through standard attribute validation (validateAttribute() / validateProperty()), the i18n metadata collection path allowed these same attribute names to be marked for translation using i18n-on* attributes (e.g., i18n-onerror).

When exploited, a lower-trust translation file could replace a benign static handler such as onerror="void 0" with arbitrary executable JavaScript in the localized build.

The following example illustrates a vulnerable pattern:

<img src="foo.jpg" onerror="void 0" i18n-onerror />

Impact

When exploited, this vulnerability allows arbitrary JavaScript execution within the context of the vulnerable application's domain if an attacker can control or influence the translation files used during localization. This can lead to:

• Session Hijacking: Accessing session cookies, tokens, or sensitive user data.
• Unauthorized Actions: Performing actions on behalf of the authenticated user.

Patched Versions

• 22.0.1
• 21.2.19
• 20.3.27

Workarounds

Ensure that static event-handler attributes (e.g., onerror, onclick) are never marked for internationalization (i18n-on*) in application templates, and ensure translation files are sourced from trusted origins.

Severity

• CVSS Score: 7.6 / 10 (High)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

References

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

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

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Release Notes

angular/angular (@​angular/compiler)

v21.2.19

Compare Source

compiler

Commit	Type	Description
e2660c3dee	fix	disallow i18n event attributes
7b884f585a	fix	restrict possible event handler check to property names longer than 2 characters

http

Commit	Type	Description
948a8d6831	fix	distinguish repeated transfer cache params
9949dccce1	fix	enable xsrf for root-provided HttpClient

platform-server

Commit	Type	Description
f34a93c946	fix	update domino to latest version

v21.2.18

Compare Source

compiler-cli

Commit	Type	Description
8d22cc953b	fix	update babel dependencies to latest v7

core

Commit	Type	Description
6bcce117fb	fix	avoid caching missing locale data
5a693bafcd	fix	reject dynamic script host elements

http

Commit	Type	Description
91df739b80	fix	prevent caching of responses with Set-Cookie headers

service-worker

Commit	Type	Description
1804f73bec	fix	preserve referrer in asset requests
e86c31bf26	fix	preserve referrer policy in asset requests

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