High
Angular: Sensitive Header Leakage on Cross-Origin Redirects in Angular Service Worker
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-54264
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 16:11 UTC · Revision 1
Source evidence
Angular: Sensitive Header Leakage on Cross-Origin Redirects in Angular Service Worker
core-osv · Original sourcePublished 22 Jun 2026, 15:32 UTC
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.
osv:CVE-2026-54264
Complete source record
{
"id": "73c31f1a0b99f4a2825e1a91aad8b11b32ea21d52d23298fd0d366d5af7b0c43",
"url": "https://osv.dev/vulnerability/CVE-2026-54264",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Angular: Sensitive Header Leakage on Cross-Origin Redirects in Angular Service Worker",
"summary": "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.",
"evidence": "osv:CVE-2026-54264",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-54264",
"aliases": [
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"metrics": [
{
"type": "CVSS_V4",
"score": "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"
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"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54264.json"
}
}
],
"modified": "2026-10-28T02:30:30.360159948Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54264.json",
"https://github.com/angular/angular/security/advisories/GHSA-qxh6-94w6-9r5p",
"https://nvd.nist.gov/vuln/detail/CVE-2026-54264",
"https://github.com/angular/angular/commit/47d68dcb26266316647133ab6385e77fc3e5ae08",
"https://github.com/angular/angular/pull/69029"
],
"provider_metadata": {
"cwe_ids": [
"CWE-200",
"CWE-359"
],
"cna_assigner": "GitHub_M",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": ">= 22.0.0-next.0 < 22.0.1"
},
{
"last_affected": ">= 22.0.0-next.0 < 22.0.1"
},
{
"introduced": ">= 21.0.0-next.0 < 21.2.17"
},
{
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{
"introduced": ">= 20.0.0-next.0 < 20.3.25"
},
{
"last_affected": ">= 20.0.0-next.0 < 20.3.25"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54264.json"
}
},
"related_cves": [
{
"value": "CVE-2026-54264",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 497168,
"published_at": "2026-06-22T15:32:48.163+00:00"
}