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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-88057
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-10 19:17:41 UTC
Updated2026-09-10 19:44:21 UTC
DescriptionAngular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.28, 21.2.20, and 22.1.0, Angular's compiler and runtime in @angular/core and @angular/compiler could omit or select an incorrect sanitizer for security-sensitive directive host bindings because SecurityContext was derived from the declaring directive or component selector rather than the concrete host element. The mismatch is reachable through hostDirectives composition, inherited HostBinding declarations, createComponent with a custom hostElement or dynamic directives, SVG/MathML namespace elements, and tag-neutral selectors such as :not(...). Attacker-controlled href, src, action, xlink:href, or data values can therefore reach DOM attributes without Angular's built-in sanitizer and execute arbitrary JavaScript in the user's browser context. Applications unable to upgrade can use DomSanitizer.sanitize with SecurityContext.URL before assignment or restrict inputs to validated HTTP and HTTPS URL schemes. This issue is fixed in versions 20.3.28, 21.2.20, and 22.1.0.

Risk And Classification

Primary CVSS: v4.0 5.3 MEDIUM from [email protected]

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary5.3MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/C...
4.0CNADECLARED5.3MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
Passive
Confidentiality
None
Integrity
None
Availability
None
Sub Conf.
Low
Sub Integrity
Low
Sub Availability
None

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Angular Angular affected <= 19.2.25 Not specified
CNA Angular Angular affected >= 20.0.0, < 20.3.28 Not specified
CNA Angular Angular affected >= 21.0.0, < 21.2.20 Not specified
CNA Angular Angular affected >= 22.0.0, < 22.1.0 Not specified

References

ReferenceSourceLinkTags
github.com/angular/angular/commit/6caa298dee58319b2d674dc91364e26ffe3ecb2b [email protected] github.com
github.com/angular/angular/releases/tag/v21.2.20 [email protected] github.com
github.com/angular/angular/commit/2f96c8020f85ccb715a76de4b79a0c680c2c7264 [email protected] github.com
github.com/angular/angular/releases/tag/v20.3.28 [email protected] github.com
github.com/angular/angular/security/advisories/GHSA-hh8m-fm6v-7cvg [email protected] github.com
github.com/angular/angular/issues/69550 [email protected] github.com
github.com/angular/angular/pull/69558 [email protected] github.com
github.com/angular/angular/commit/6afe6fa781c2f0931f0aedd729b9884a8fe212ee [email protected] github.com
github.com/angular/angular/releases/tag/v22.1.0 [email protected] github.com
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