Angular: Request Credential & Cache Policy Stripping in Angular Service Worker

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, an issue in the @angular/service-worker package compromises the integrity of request-policy enforcement during request reconstruction. When the Angular Service Worker intercepts network requests for matched assets, it reconstructs a new Request object using an internal helper function. During this reconstruction process, the helper function strips explicit client-defined safety parameters: the credentials configuration (such as credentials: 'omit') and the HTTP cache mode configuration (such as cache: 'no-store'). These are reverted back to standard browser-default parameters (credentials: 'same-origin' and default HTTP cache properties). This causes the browser to include active credentials (such as cookies or Authorization headers) on outbound requests where the client-side developer explicitly instructed they should be omitted, leading to potential session leaks. Additionally, it causes private or non-cacheable resources to be cached by the service worker's engine, making private page states accessible or persistent inside the client's local cache post-logout. This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23.

Scores

EPSS (exploitation in 30 days)

0.21% · top 89% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.7.

Weakness

• CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (opens in a new tab)All about CWE-200 and its CVEs
• CWE-524: Use of Cache Containing Sensitive Information (opens in a new tab)All about CWE-524 and its CVEs

Affected products

• angular · angular

  • affected >= 22.0.0-next.0, < 22.0.0-rc.2
  • affected >= 21.0.0-next.0, < 21.2.15
  • affected >= 20.0.0-next.0, < 20.3.22
  • affected >= 19.0.0-next.0, < 19.2.23
  • affected <= 18.2.14

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• npm@angular/service-workerGHSA-95qp-cmmw-mgqv (opens in a new tab)

References (2)

• https://github.com/angular/angular/security/advisories/GHSA-95qp-cmmw-mgqv (opens in a new tab)x_refsource_CONFIRM
• https://github.com/angular/angular/pull/68904 (opens in a new tab)x_refsource_MISC

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-95qp-cmmw-mgqv (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-50184](https://trackcve.app/badge/CVE-2026-50184.svg)](https://trackcve.app/cve/CVE-2026-50184)

Record last updated 23 Jun 2026, 13:48 UTC.