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/platform-server package allows remote attackers to bypass host allowlist constraints and direct server-side outgoing requests to arbitrary external endpoints. This occurs due to a parser differential between the strict WHATWG URL parser used for allowlist validation and the lenient Domino URL parser used to initialize the server emulated DOM. When a server-side request contains a malformed URL with a double port structure (e.g., http://evil.com:80:80/path), Node's strict URL.canParse(url) logic returns false and skips host check validation entirely. However, the same malformed URL is later accepted and parsed leniently by Domino's internal parser, which resolves the origin to http://evil.com:80. The Angular SSR HTTP request interceptor (relativeUrlsTransformerInterceptorFn) then resolves all relative backend HTTP requests against this adopted origin, executing the SSRF attack. 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/platform-server package allows remote attackers to bypass host allowlist constraints and     direct server-side outgoing requests to arbitrary external endpoints. This occurs due to a parser     differential between the strict WHATWG URL parser used for allowlist validation and the lenient Domino URL     parser used to initialize the server emulated DOM. When a server-side request contains a malformed URL     with a double port structure (e.g., http://evil.com:80:80/path), Node's strict URL.canParse(url) logic     returns false and skips host check validation entirely. However, the same malformed URL is later accepted     and parsed leniently by Domino's internal parser, which resolves the origin to http://evil.com:80. The     Angular SSR HTTP request interceptor (relativeUrlsTransformerInterceptorFn) then resolves all relative     backend HTTP requests against this adopted origin, executing the SSRF attack. This vulnerability is fixed     in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23. (CVE-2026-50168)

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/platform-server package allows remote attackers to bypass host allowlist constraints and
    direct server-side outgoing requests to arbitrary external endpoints. This occurs due to a parser
    differential between the strict WHATWG URL parser used for allowlist validation and the lenient Domino URL
    parser used to initialize the server emulated DOM. When a server-side request contains a malformed URL
    with a double port structure (e.g., http://evil.com:80:80/path), Node's strict URL.canParse(url) logic
    returns false and skips host check validation entirely. However, the same malformed URL is later accepted
    and parsed leniently by Domino's internal parser, which resolves the origin to http://evil.com:80. The
    Angular SSR HTTP request interceptor (relativeUrlsTransformerInterceptorFn) then resolves all relative
    backend HTTP requests against this adopted origin, executing the SSRF attack. This vulnerability is fixed
    in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23. (CVE-2026-50168)

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
322235	Linux Distros Unpatched Vulnerability : CVE-2026-50168	Nessus	Misc.	Local	high
443214	SCA: security update for @angular/platform-server (GHSA-xrxm-cp7j-8xf6)	Tenable Cloud Security	SCA Checks	Local	high
443214	SCA: security update for @angular/platform-server (GHSA-xrxm-cp7j-8xf6)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-50168

high

Tenable Plugins

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high

high

high

high

high

high