Vulnerability Database

357,869

Total vulnerabilities in the database

CVE-2026-50169 — @angular / service-worker

Exposure of Sensitive Information to an Unauthorized Actor

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.

CVSS v3:

  • Severity: Medium
  • Score: 6.1
  • AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Software From Fixed in
Node.js icon @angular / service-worker 22.0.0-next.0 22.0.0-rc.2
Node.js icon @angular / service-worker 20.0.0-next.0 20.3.22
Node.js icon @angular / service-worker 19.0.0-next.0 19.2.23
Node.js icon @angular / service-worker - 18.2.14.x
Node.js icon @angular / service-worker 21.0.0-next.0 21.2.15
angular / angular - 18.2.14.x
angular / angular 19.0.0 19.2.23
angular / angular 20.0.0 20.3.22
angular / angular 21.0.0 21.2.15
angular / angular 22.0.0-next0 22.0.0-next0.x
angular / angular 22.0.0-next1 22.0.0-next1.x
angular / angular 22.0.0-next10 22.0.0-next10.x
angular / angular 22.0.0-next11 22.0.0-next11.x
angular / angular 22.0.0-next12 22.0.0-next12.x
angular / angular 22.0.0-next2 22.0.0-next2.x
angular / angular 22.0.0-next3 22.0.0-next3.x
angular / angular 22.0.0-next4 22.0.0-next4.x
angular / angular 22.0.0-next5 22.0.0-next5.x
angular / angular 22.0.0-next6 22.0.0-next6.x
angular / angular 22.0.0-next7 22.0.0-next7.x
angular / angular 22.0.0-next8 22.0.0-next8.x
angular / angular 22.0.0-next9 22.0.0-next9.x
angular / angular 22.0.0-rc0 22.0.0-rc0.x
angular / angular 22.0.0-rc1 22.0.0-rc1.x

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.