Update dependency @angular/core to v21.2.20 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@angular/core (source)	21.2.19 → 21.2.20

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Angular: Sanitization bypass via directive host bindings on concrete host elements in @​angular/core and @​angular/compiler

CVE-2026-88057 / GHSA-hh8m-fm6v-7cvg

More information

Details

Angular automatically sanitizes untrusted values bound to security-sensitive DOM sinks (such as href, src, action, xlink:href, and data) to protect against Cross-Site Scripting (XSS).

Prior to the fix, the Angular compiler determined the SecurityContext for directive host bindings (host: {'[attr.href]': 'value'} or @HostBinding('attr.href')) based solely on the declaring directive or component selector at compile time, rather than the concrete host element that the directive was applied to.

When a directive with a security-sensitive host binding was applied to a different concrete host element—such as through:

• hostDirectives composition,
• Class inheritance of host bindings,
• Dynamic component instantiation (createComponent with custom hostElement or dynamic directives),
• Elements with SVG/MathML namespaces (e.g. <svg:a>, <math>), or
• Elements using tag-neutral selectors (e.g. :not(...)),

the compiler either failed to associate a sanitizer with the host binding or attached an incorrect security context. As a result, untrusted inputs (e.g. javascript:... URLs) bound via the host binding would be written to the DOM attribute without passing through Angular's built-in sanitizer.

Impact

An attacker capable of controlling the value bound to an affected directive host binding could execute arbitrary JavaScript in the user's browser context (Cross-Site Scripting).

Patches

This issue has been resolved in versions:

• 22.1.0
• 21.2.20
• 20.3.28

Workarounds

Ensure that any user-controlled values assigned to properties bound via directive host bindings are explicitly sanitized using DomSanitizer.sanitize(SecurityContext.URL, ...) before assignment, or restrict the input to validated safe URL schemes (e.g. http://, https://).

Severity

• CVSS Score: 5.3 / 10 (Medium)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

References

• https://github.com/angular/angular/security/advisories/GHSA-hh8m-fm6v-7cvg
• https://github.com/angular/angular/issues/69550
• https://github.com/angular/angular/pull/69558
• https://github.com/angular/angular/commit/2f96c8020f85ccb715a76de4b79a0c680c2c7264
• https://github.com/angular/angular/commit/6afe6fa781c2f0931f0aedd729b9884a8fe212ee
• https://github.com/angular/angular/commit/6caa298dee58319b2d674dc91364e26ffe3ecb2b
• https://github.com/angular/angular/releases/tag/v20.3.28
• https://github.com/angular/angular/releases/tag/v21.2.20
• https://github.com/angular/angular/releases/tag/v22.1.0
• https://github.com/advisories/GHSA-hh8m-fm6v-7cvg

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

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Release Notes

angular/angular (@​angular/core)

v21.2.20

Compare Source

core

Commit	Type	Description
6afe6fa781	fix	sanitize host bindings on concrete hosts

http

Commit	Type	Description
fec5977df4	fix	match header values exactly when deleting
e33d69a71c	fix	preserve immutability of materialized clones
caf616670f	fix	run root interceptors in the terminal request chain

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Test Results

Coverage Summary

Node	Lines	Statements	Branches	Functions
22	75.94%	74.96%	61.59%	77.97%
24	75.94%	74.96%	61.59%	77.97%
25	75.94%	74.96%	61.59%	77.97%

Coverage & Quality Reports

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.99%. Comparing base (2a772d8) to head (a7ec503).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #429   +/-   ##
=======================================
  Coverage   76.99%   76.99%           
=======================================
  Files          51       51           
  Lines        3569     3569           
  Branches     1018     1018           
=======================================
  Hits         2748     2748           
  Misses        819      819           
  Partials        2        2           

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