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Vulnerability · Published Sep 10, 2026 · Assigned by GitHub_M

CVE-2026-88057Angular: Sanitization bypass via directive host bindings on concrete host elements in @angular/core and @angular/compiler

Medium 5.3

In plain English

A medium-severity cross-site scripting in angular from angular. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.3Medium
Exploit odds (30 days)0.4%top 68.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Angular 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12angular.jsno fix listedDEBIAN-CVE-2026-88057
Debian:13angular.jsno fix listedDEBIAN-CVE-2026-88057
Ubuntu:22.04:LTSangular.jsno fix listedUBUNTU-CVE-2026-88057
Ubuntu:24.04:LTSangular.jsno fix listedUBUNTU-CVE-2026-88057
Ubuntu:26.04:LTSangular.jsno fix listedUBUNTU-CVE-2026-88057
Ubuntu:26.10angular.jsno fix listedUBUNTU-CVE-2026-88057
npm@angular/compiler21.2.20GHSA-hh8m-fm6v-7cvg
npm@angular/compiler22.1.0GHSA-hh8m-fm6v-7cvg
npm@angular/compiler20.3.28GHSA-hh8m-fm6v-7cvg
npm@angular/compilerno fix listedGHSA-hh8m-fm6v-7cvg
npm@angular/coreno fix listedGHSA-hh8m-fm6v-7cvg
npm@angular/core22.1.0GHSA-hh8m-fm6v-7cvg
npm@angular/core20.3.28GHSA-hh8m-fm6v-7cvg
npm@angular/core21.2.20GHSA-hh8m-fm6v-7cvg

Affected products (as reported)

VendorProductVersions
angular angular <= 19.2.25>= 20.0.0, < 20.3.28>= 21.0.0, < 21.2.20>= 22.0.0, < 22.1.0

Weakness: CWE-79 · Vector: 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