{"cve":"CVE-2026-54264","nvd":{"published":"2026-06-22T16:16:39.057","modified":"2026-07-09T15:40:14.333","status":"Analyzed","description":"Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.1, 21.2.17, and 20.3.25, an information disclosure vulnerability exists in the @angular/service-worker package of the Angular framework. When the Service Worker fetches assets, it preserves metadata (such as headers) from the original request. However, on cross-origin redirects, the Service Worker fails to strip sensitive headers, violating the Fetch redirect algorithm. This allows a remote attacker to obtain sensitive credentials (e.g., Authorization tokens, Proxy-Authorization credentials, or session cookies) by triggering a cross-origin redirect to an untrusted external origin. This vulnerability is fixed in 22.0.1, 21.2.17, and 20.3.25.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","score":8.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-200","CWE-359"],"references":["https://github.com/angular/angular/commit/47d68dcb26266316647133ab6385e77fc3e5ae08","https://github.com/angular/angular/pull/69029","https://github.com/angular/angular/security/advisories/GHSA-qxh6-94w6-9r5p"],"products":["angular:angular"],"source":"nvd","synced_at":"2026-10-19T22:39:28.638635428+00:00"},"epss":{"cve":"CVE-2026-54264","score":0.0039,"percentile":0.33145,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-qxh6-94w6-9r5p","url":"https://osv.dev/vulnerability/GHSA-qxh6-94w6-9r5p","summary":"@angular/service-worker: Sensitive Header Leakage on Cross-Origin Redirects in Angular Service Worker","modified":"2026-07-15T22:30:45.632423045Z","packages":[{"ecosystem":"npm","name":"@angular/service-worker","purl":"pkg:npm/%40angular/service-worker","ranges":[">=22.0.0-next.0 <22.0.1"],"fixed":["22.0.1"]},{"ecosystem":"npm","name":"@angular/service-worker","purl":"pkg:npm/%40angular/service-worker","ranges":[">=21.0.0-next.0 <21.2.17"],"fixed":["21.2.17"]},{"ecosystem":"npm","name":"@angular/service-worker","purl":"pkg:npm/%40angular/service-worker","ranges":[">=20.0.0-next.0 <20.3.25"],"fixed":["20.3.25"]},{"ecosystem":"npm","name":"@angular/service-worker","purl":"pkg:npm/%40angular/service-worker","ranges":["<=19.2.25"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}