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{"bugzilla": {"description": "@angular/service-worker: @angular/service-worker: Security flaw leads to session leaks and cached private data", "id": "2491455", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2491455"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-524", "details": ["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.", "A flaw was found in the @angular/service-worker component. When the Angular Service Worker reconstructs network requests, it inadvertently removes client-defined security settings for credentials and HTTP caching. This can cause the browser to send sensitive credentials, such as cookies or authorization headers, on requests where they were explicitly meant to be omitted, potentially leading to session leaks. Additionally, private data that should not be cached may be stored locally, making it accessible even after a user logs out."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-50184", "package_state": [{"cpe": "cpe:/a:redhat:jboss_fuse:7", "fix_state": "Not affected", "package_name": "service-worker", "product_name": "Red Hat Fuse 7"}], "public_date": "2026-06-22T15:42:05Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-50184\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-50184\nhttps://github.com/angular/angular/pull/68904\nhttps://github.com/angular/angular/security/advisories/GHSA-95qp-cmmw-mgqv"], "statement": "This Moderate impact flaw in the `@angular/service-worker` component, which could lead to session leaks and cached private data due to improper handling of client-defined security settings during network request reconstruction, does not affect Red Hat products. The vulnerable code is not present in Red Hat JBoss Fuse.", "threat_severity": "Moderate"}