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High severity7.5GHSA Advisory· Published Jun 22, 2026· Updated Jul 9, 2026

CVE-2026-50170

CVE-2026-50170

Description

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.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
@angular/commonnpm
>= 22.0.0-next.0, < 22.0.0-rc.222.0.0-rc.2
@angular/commonnpm
>= 20.0.0-next.0, < 20.3.2220.3.22
@angular/commonnpm
>= 19.0.0-next.0, < 19.2.2319.2.23
@angular/commonnpm
<= 18.2.14—
@angular/commonnpm
>= 21.0.0-next.0, < 21.2.1521.2.15

Affected products

33

Patches

Vulnerability mechanics

References

4

News mentions

1