# CVE-2026-50170

## Summary

- **CVE ID:** CVE-2026-50170
- **Severity:** HIGH
- **CVSS Score:** 8.2 (CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-524
- **Published:** Jun 22, 2026
- **Last Modified:** Jun 23, 2026

## 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.

## Affected Products

- angular — angular (>= 22.0.0-next.0, < 22.0.0-rc.2)
- angular — angular (>= 21.0.0-next.0, < 21.2.15)
- angular — angular (>= 20.0.0-next.0, < 20.3.22)
- angular — angular (>= 19.0.0-next.0, < 19.2.23)
- angular — angular (<= 18.2.14)

## References

- [CNA](https://github.com/angular/angular/security/advisories/GHSA-q6f4-qqrg-jv6x)
- [CNA](https://github.com/angular/angular/pull/67964)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.43%
- **EPSS Percentile:** 35.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._