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.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50169.json",
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-200",
"CWE-441",
"CWE-524"
]
}{
"cpe": [
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"cpe:2.3:a:angularjs:angularjs:22.0.0:next0:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next1:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next10:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next11:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next12:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next2:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next3:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next4:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next5:*:*:*:*:*:*",
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],
"source": [
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],
"extracted_events": [
{
"introduced": "0"
},
{
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{
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{
"introduced": "22.0.0-next4"
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{
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{
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{
"introduced": "22.0.0-next7"
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{
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{
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{
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{
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{
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}
]
}