Cloudanix VulnDB

CVE-2026-50170

High · 7.5

CVSS

7.5

EPSS

0.4%

Published

Jun 22, 2026

CISA due date

—

The record

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.

Affected packages

Ecosystem Package Introduced Fixed
npm @angular/common 0 No fix
npm @angular/common 19.0.0-next.0 19.2.23
npm @angular/common 20.0.0-next.0 20.3.22
npm @angular/common 21.0.0-next.0 21.2.15
npm @angular/common 22.0.0-next.0 22.0.0-rc.2

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