CVE-2026-50169 (GCVE-0-2026-50169)

Vulnerability from cvelistv5 – Published: 2026-06-22 15:41 – Updated: 2026-06-22 17:32
VLAI
Title
Angular Service Worker Policy-Bypass & Credential-Stripping Vulnerabilities
Summary
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 the strict, client-defined request redirect policy configuration (such as redirect: 'error'), falling back to the browser's default 'follow' strategy. If the target web application makes client-side requests with a strict policy (e.g., expecting a network error instead of automatically following redirects), the service worker will bypass this instruction and automatically follow HTTP 3xx redirects to other destinations. This acts as an unintended proxy/intermediary ("Confused Deputy") and can result in cookie/credential exposure or same-origin session-restricted data leakage if public dynamic routes redirect to sensitive routes. This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23.
Severity
5.7 (Medium)
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
  • CWE-524 - Use of Cache Containing Sensitive Information
Assigner
References
Impacted products
Vendor Product Version
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
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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