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CVE-2026-54264— Angular: Sensitive Header Leakage on Cross-Origin Redirects in Angular Service Worker

Quick assessment

Affected
angular angular
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Angular是Angular组织开源的一个开发平台。用于使用 Typescript / JavaScript 和其他语言构建移动和桌面 Web 应用程序。 Angular存在信息泄露漏洞，该漏洞源于@angular/service-worker package组件问题，当Service Worker获取资产时保留原始请求中的元数据，在跨域重定向时未能剥离敏感标头，可能导致远程攻击者通过触发跨域重定向获取敏感凭据。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.39% · P31

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 4

VendorProduct Version RangeStatus
angular angular >= 22.0.0-next.0 < 22.0.1 affected
>= 21.0.0-next.0 < 21.2.17 affected
>= 20.0.0-next.0 < 20.3.25 affected
<= 19.2.25 affected
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I. Basic Information for CVE-2026-54264

Vulnerability Information
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Vulnerability Title
Angular: Sensitive Header Leakage on Cross-Origin Redirects in Angular Service Worker
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Angular 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Angular是Angular组织开源的一个开发平台。用于使用 Typescript / JavaScript 和其他语言构建移动和桌面 Web 应用程序。 Angular存在信息泄露漏洞，该漏洞源于@angular/service-worker package组件问题，当Service Worker获取资产时保留原始请求中的元数据，在跨域重定向时未能剥离敏感标头，可能导致远程攻击者通过触发跨域重定向获取敏感凭据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
angular angular >= 22.0.0-next.0 < 22.0.1 -

II. Public POCs for CVE-2026-54264

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III. Intelligence Information for CVE-2026-54264

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Patches & Fixes for CVE-2026-54264 (2)

Vendor Advisories for CVE-2026-54264 (1)

Same Patch Batch · angular · 2026-06-22 · 17 CVEs total

CVE-2026-52725 Angular Template and Dynamic Component Namespace Bypass leading to Cross-Site Scripting (X
CVE-2026-54265 Angular: Two-Way Property Binding Sanitization Bypass (XSS)
CVE-2026-54268 Angular: Denial of Service (DoS) via OOM in Date Formatting (formatDate)
CVE-2026-54266 Angular: Weak 32-Bit Cache Key Hashing in `HttpTransferCache` Leading to Cross-Request Dat
CVE-2026-54267 Angular Client Hydration DOM Clobbering & Response-Cache Poisoning
CVE-2026-49241 Angular: Multiple Remote Code Execution Vulnerabilities in Angular Language Service VS Cod
CVE-2026-50171 Angular: Denial of Service (DoS) via OOM in Number Formatting (digitsInfo)
CVE-2026-50169 Angular Service Worker Policy-Bypass & Credential-Stripping Vulnerabilities
CVE-2026-50557 Angular: Template and Attribute Namespace Sanitization Bypass (XSS)
CVE-2026-50168 Angular: URL Parser Differential in @angular/platform-server leading to SSRF Allowlist Byp
CVE-2026-50556 Angular: Missing `<noscript>` Raw-Text Serialization Escaping leads to Cross-Site Scriptin
CVE-2026-50555 Angular: Improper Neutralization of Input During Web Page Generation ('Cross-site Scriptin
CVE-2026-50184 Angular: Request Credential & Cache Policy Stripping in Angular Service Worker
CVE-2026-50170 Angular: Information Leak via Default Caching of Credentialed Requests in HttpTransferCach
CVE-2026-50178 Angular: Remote Code Execution via JSDoc Hover Command Injection in VS Code Angular Langua
CVE-2026-46417 Angular: SSRF via Hostname Hijacking in @angular/platform-server

IV. Related Vulnerabilities

Same product: angular
Same vendor: angular
Same weakness: CWE-200

V. Comments for CVE-2026-54264

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