What is CVE-2026-50170?

CVE-2026-50170 is a high-severity vulnerability in Angular, classified under Use of Cache Containing Sensitive Information. CVSS score: 7.5/10. Published 2026-06-22.

How severe is CVE-2026-50170?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Angular

CVE-2026-50170

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.

Published 2026-06-22 · last modified 2026-07-09.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (36.4th percentile), scored 2026-09-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Angular — versions <= 18.2.14, >= 19.0.0-next.0, < 19.2.23, 22.0.0
Angularjs — versions 22.0.0

Weakness classification (CWE)

CWE-524 — Use of Cache Containing Sensitive Information

References

github.com/angular/angular/security/advisories/GHSA-q6f4-qqrg-jv6x (Third Party Advisory)
github.com/angular/angular/pull/67964 (Patch, Issue Tracking)

Frequently asked questions

What is CVE-2026-50170?: CVE-2026-50170 is a high-severity vulnerability in Angular, classified under Use of Cache Containing Sensitive Information. CVSS score: 7.5/10. Published 2026-06-22.
How severe is CVE-2026-50170?: High severity. CVSS v3 base score is 7.5 out of 10.