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, a vulnerability was discovered in @angular/common when Server-Side Rendering (SSR) and hydration are enabled. The HttpTransferCache utility optimizes hydration by caching outgoing HTTP requests performed during SSR and transferring the cached state to the client-side application via TransferState. However, the caching mechanism fails to inspect the withCredentials flag or the Cookie header of outgoing requests. As a result, credentialed, user-specific responses may be cached by default in the shared TransferState payload. When these responses are serialized into the HTML, any caching layer (such as a CDN, reverse proxy, or shared server cache) that caches the SSR-rendered HTML page could inadvertently cache and leak one user's private data to other users, leading to a high-severity information disclosure vulnerability. 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, a     vulnerability was discovered in @angular/common when Server-Side Rendering (SSR) and hydration are     enabled. The HttpTransferCache utility optimizes hydration by caching outgoing HTTP requests performed     during SSR and transferring the cached state to the client-side application via TransferState. However,     the caching mechanism fails to inspect the withCredentials flag or the Cookie header of outgoing requests.
    As a result, credentialed, user-specific responses may be cached by default in the shared TransferState     payload. When these responses are serialized into the HTML, any caching layer (such as a CDN, reverse     proxy, or shared server cache) that caches the SSR-rendered HTML page could inadvertently cache and leak     one user's private data to other users, leading to a high-severity information disclosure vulnerability.
    This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23. (CVE-2026-50170)

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, a
    vulnerability was discovered in @angular/common when Server-Side Rendering (SSR) and hydration are
    enabled. The HttpTransferCache utility optimizes hydration by caching outgoing HTTP requests performed
    during SSR and transferring the cached state to the client-side application via TransferState. However,
    the caching mechanism fails to inspect the withCredentials flag or the Cookie header of outgoing requests.
    As a result, credentialed, user-specific responses may be cached by default in the shared TransferState
    payload. When these responses are serialized into the HTML, any caching layer (such as a CDN, reverse
    proxy, or shared server cache) that caches the SSR-rendered HTML page could inadvertently cache and leak
    one user's private data to other users, leading to a high-severity information disclosure vulnerability.
    This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23. (CVE-2026-50170)

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
322255	Linux Distros Unpatched Vulnerability : CVE-2026-50170	Nessus	Misc.	Local	high
443210	SCA: security update for @angular/common (GHSA-q6f4-qqrg-jv6x)	Tenable Cloud Security	SCA Checks	Local	high
443210	SCA: security update for @angular/common (GHSA-q6f4-qqrg-jv6x)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-50170

high

Tenable Plugins

high

high

high

high

high

high

high