CVE-2026-54266 - High Severity Vulnerability
Vulnerable Library - common-12.2.5.tgz
Angular - commonly needed directives and services
Library home page: https://registry.npmjs.org/@angular/common/-/common-12.2.5.tgz
Path to dependency file: /package.json
Path to vulnerable library: /package.json
Dependency Hierarchy:
- ❌ common-12.2.5.tgz (Vulnerable Library)
Found in HEAD commit: 36a9c5d28529109984de6fcc3d0a157d561dac4a
Found in base branch: master
Vulnerability Details
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, Angular's HttpTransferCache caches HTTP requests made during Server-Side Rendering (SSR) so that they can be reused during client-side hydration. This avoids repeating the same HTTP requests on the client. The cached responses are stored in TransferState using a cache key generated by hashing request properties (method, response type, mapped URL, serialized body, and sorted query parameters). The cache keys are generated using a weak 32-bit DJB2-like polynomial rolling hash. The 32-bit hash space is extremely small, allowing attackers to find hash collisions. An attacker can easily find a query parameter string (e.g., q=aaCAZMMM for a search request) that produces the exact same 32-bit hash as a sensitive endpoint (e.g., /api/user/profile). When a victim visits a crafted link containing the colliding parameter, the SSR process executes both the search request and the profile request. Due to the hash collision, the search response overwrites the profile response in the TransferState cache. This vulnerability is fixed in 22.0.1, 21.2.17, and 20.3.25.
Publish Date: 2026-06-22
URL: CVE-2026-54266
CVSS 3 Score Details (8.2)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-39pv-4j6c-2g6v
Release Date: 2026-06-15
Fix Resolution: https://github.com/angular/angular.git - v20.3.25,https://github.com/angular/angular.git - v21.2.17
CVE-2026-54266 - High Severity Vulnerability
Angular - commonly needed directives and services
Library home page: https://registry.npmjs.org/@angular/common/-/common-12.2.5.tgz
Path to dependency file: /package.json
Path to vulnerable library: /package.json
Dependency Hierarchy:
Found in HEAD commit: 36a9c5d28529109984de6fcc3d0a157d561dac4a
Found in base branch: master
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, Angular's HttpTransferCache caches HTTP requests made during Server-Side Rendering (SSR) so that they can be reused during client-side hydration. This avoids repeating the same HTTP requests on the client. The cached responses are stored in TransferState using a cache key generated by hashing request properties (method, response type, mapped URL, serialized body, and sorted query parameters). The cache keys are generated using a weak 32-bit DJB2-like polynomial rolling hash. The 32-bit hash space is extremely small, allowing attackers to find hash collisions. An attacker can easily find a query parameter string (e.g., q=aaCAZMMM for a search request) that produces the exact same 32-bit hash as a sensitive endpoint (e.g., /api/user/profile). When a victim visits a crafted link containing the colliding parameter, the SSR process executes both the search request and the profile request. Due to the hash collision, the search response overwrites the profile response in the TransferState cache. This vulnerability is fixed in 22.0.1, 21.2.17, and 20.3.25.
Publish Date: 2026-06-22
URL: CVE-2026-54266
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: GHSA-39pv-4j6c-2g6v
Release Date: 2026-06-15
Fix Resolution: https://github.com/angular/angular.git - v20.3.25,https://github.com/angular/angular.git - v21.2.17