Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.0-rc.2, 21.2.15 20.3.22, and 19.2.23, an issue in the @angular/service-worker package compromises the integrity of request-policy enforcement during request reconstruction. When the Angular Service Worker intercepts network requests for matched assets, it reconstructs a new Request object using an internal helper function. During this reconstruction process, the helper function strips the strict, client-defined request redirect policy configuration (such as redirect: 'error'), falling back to the browser's default 'follow' strategy. If the target web application makes client-side requests with a strict policy (e.g., expecting a network error instead of automatically following redirects), the service worker will bypass this instruction and automatically follow HTTP 3xx redirects to other destinations. This acts as an unintended proxy/intermediary ("Confused Deputy") and can result in cookie/credential exposure or same-origin session-restricted data leakage if public dynamic routes redirect to sensitive routes. This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23.

According to its self-reported version number, Angular is prior to 19.0.0, 19.x prior to 19.2.23, 20.x prior to 20.3.22 or 21.x prior to 21.2.15. It is, therefore, affected by multiple vulnerabilities:

- A sanitization bypass vulnerability in @angular/compiler and @angular/core. Namespaced script elements (such as <svg:script>) are not stripped during template compilation and attributes of namespaced elements are not consistently sanitized, leading to Cross-Site Scripting (XSS). (CVE-2026-50557)

- A request policy bypass vulnerability in @angular/service-worker. The credentials and cache modes defined by the client are stripped when requests are reconstructed, causing credentials to be sent on requests where they should be omitted and private resources to be cached. (CVE-2026-50184)

- A Server-Side Request Forgery (SSRF) vulnerability in @angular/platform-server. A URL parser differential between the WHATWG URL parser used for allowlist validation and the Domino URL parser allows a malformed URL (such as one with a double port) to bypass the allowedHosts check and direct server-side requests to an arbitrary host. (CVE-2026-50168)

- A protection bypass vulnerability in the dynamic component instantiation (createComponent) of @angular/core. Components can be mounted onto <script> or namespaced script elements, allowing an attacker controlling the host element or selector to execute arbitrary JavaScript, leading to Cross-Site Scripting (XSS). (CVE-2026-52725)

- A request redirect policy bypass vulnerability in @angular/service-worker. The redirect mode defined by the client is stripped when requests are reconstructed, causing HTTP redirects to be followed automatically and potentially exposing credentials or session-restricted data. (CVE-2026-50169)

- A denial of service vulnerability in the formatNumber function of @angular/common, also used by DecimalPipe, PercentPipe and CurrencyPipe. The fraction digits of the digitsInfo parameter are not bounded, allowing a crafted value to trigger an unbounded loop and memory exhaustion. (CVE-2026-50171)

- An information disclosure vulnerability in the HttpTransferCache of @angular/common when SSR and hydration are enabled. Credentialed requests are cached by default in the serialized transfer state, allowing a shared cache (such as a CDN) to leak private data of a user to other users. (CVE-2026-50170)

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Angular is a development platform for building mobile and desktop web applications using     TypeScript/JavaScript and other languages. Prior to 22.0.0-rc.2, 21.2.15 20.3.22, and 19.2.23, an issue in     the @angular/service-worker package compromises the integrity of request-policy enforcement during request     reconstruction. When the Angular Service Worker intercepts network requests for matched assets, it     reconstructs a new Request object using an internal helper function. During this reconstruction process,     the helper function strips the strict, client-defined request redirect policy configuration (such as     redirect: 'error'), falling back to the browser's default 'follow' strategy. If the target web application     makes client-side requests with a strict policy (e.g., expecting a network error instead of automatically     following redirects), the service worker will bypass this instruction and automatically follow HTTP 3xx     redirects to other destinations. This acts as an unintended proxy/intermediary (Confused Deputy) and can     result in cookie/credential exposure or same-origin session-restricted data leakage if public dynamic     routes redirect to sensitive routes. This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and     19.2.23. (CVE-2026-50169)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Angular is a development platform for building mobile and desktop web applications using
    TypeScript/JavaScript and other languages. Prior to 22.0.0-rc.2, 21.2.15 20.3.22, and 19.2.23, an issue in
    the @angular/service-worker package compromises the integrity of request-policy enforcement during request
    reconstruction. When the Angular Service Worker intercepts network requests for matched assets, it
    reconstructs a new Request object using an internal helper function. During this reconstruction process,
    the helper function strips the strict, client-defined request redirect policy configuration (such as
    redirect: 'error'), falling back to the browser's default 'follow' strategy. If the target web application
    makes client-side requests with a strict policy (e.g., expecting a network error instead of automatically
    following redirects), the service worker will bypass this instruction and automatically follow HTTP 3xx
    redirects to other destinations. This acts as an unintended proxy/intermediary ("Confused Deputy") and can
    result in cookie/credential exposure or same-origin session-restricted data leakage if public dynamic
    routes redirect to sensitive routes. This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and
    19.2.23. (CVE-2026-50169)

ID	Name	Product	Family	Type	Severity
115608	Angular < 19.2.23 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	high
115607	Angular 19.x < 19.2.23 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	high
115606	Angular 20.x < 20.3.22 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	high
115605	Angular 21.x < 21.2.15 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	high
322248	Linux Distros Unpatched Vulnerability : CVE-2026-50169	Nessus	Misc.	Local	medium
443212	SCA: security update for @angular/service-worker (GHSA-gv2q-mqqv-365m)	Tenable Cloud Security	SCA Checks	Local	medium
443212	SCA: security update for @angular/service-worker (GHSA-gv2q-mqqv-365m)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium

Detections

Analytics

CVE-2026-50169

medium

Tenable Plugins

high

high

high

high

medium

medium

medium