Angular.js: Prior to 20.3.27, 21.2.19, and 22.0.2, HttpTransferCache comma-joins repeated request parameters, allowing semantically distinct HttpClient requests… (CVE-2026-68945)
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.27, 21.2.19, and 22.0.2, HttpTransferCache comma-joins repeated request parameters, allowing semantically distinct HttpClient requests to use the same transfer-cache key and reuse a wrong backend response. This issue is fixed in versions 20.3.27, 21.2.19, and 22.0.2.
AI Analysis
Technical Summary
The vulnerability in Angular's HttpTransferCache arises because it serializes repeated HTTP query parameters by joining their values with commas, causing distinct requests with repeated keys to produce identical cache keys. This allows a cached response from one request to be incorrectly reused for another request with different parameters during SSR hydration. The impact includes state poisoning and cross-request response reuse, where attacker-influenced cached responses can affect trusted requests. The issue affects Angular versions up to and including 19.2.25 and is fixed in versions 20.3.27, 21.2.19, and 22.0.2.
Potential Impact
An attacker can cause Angular server-rendered output to be based on incorrect backend responses by exploiting the cache-key ambiguity, leading to state poisoning and cross-request response reuse. This can result in security-sensitive requests receiving attacker-influenced cached responses instead of fresh backend data, potentially compromising application logic and data integrity.
Mitigation Recommendations
A fix is available in Angular versions 20.3.27, 21.2.19, and 22.0.2. Users should upgrade to one of these patched versions to resolve the vulnerability. If immediate upgrade is not possible, configure HttpClient requests to disable transfer caching on sensitive endpoints by setting 'transferCache: false'. Alternatively, disable the HTTP transfer cache globally in the application bootstrap configuration using 'withNoHttpTransferCache()'.
Angular.js: Prior to 20.3.27, 21.2.19, and 22.0.2, HttpTransferCache comma-joins repeated request parameters, allowing semantically distinct HttpClient requests… (CVE-2026-68945)
Description
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.27, 21.2.19, and 22.0.2, HttpTransferCache comma-joins repeated request parameters, allowing semantically distinct HttpClient requests to use the same transfer-cache key and reuse a wrong backend response. This issue is fixed in versions 20.3.27, 21.2.19, and 22.0.2.
CVSS v3.1
Score 6.1medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Angular's HttpTransferCache arises because it serializes repeated HTTP query parameters by joining their values with commas, causing distinct requests with repeated keys to produce identical cache keys. This allows a cached response from one request to be incorrectly reused for another request with different parameters during SSR hydration. The impact includes state poisoning and cross-request response reuse, where attacker-influenced cached responses can affect trusted requests. The issue affects Angular versions up to and including 19.2.25 and is fixed in versions 20.3.27, 21.2.19, and 22.0.2.
Potential Impact
An attacker can cause Angular server-rendered output to be based on incorrect backend responses by exploiting the cache-key ambiguity, leading to state poisoning and cross-request response reuse. This can result in security-sensitive requests receiving attacker-influenced cached responses instead of fresh backend data, potentially compromising application logic and data integrity.
Mitigation Recommendations
A fix is available in Angular versions 20.3.27, 21.2.19, and 22.0.2. Users should upgrade to one of these patched versions to resolve the vulnerability. If immediate upgrade is not possible, configure HttpClient requests to disable transfer caching on sensitive endpoints by setting 'transferCache: false'. Alternatively, disable the HTTP transfer cache globally in the application bootstrap configuration using 'withNoHttpTransferCache()'.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-jhpw-976m-542j
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-68945"]
- Ecosystems
- ["npm"]
- Database Specific Severity
- HIGH
- Cvss Version
- 4.0
Threat ID: 6a710665bf32cb7a34394b64
Added to database: 08/03/2026, 21:21:41 UTC
Last enriched: 08/03/2026, 21:32:10 UTC
Last updated: 09/17/2026, 22:01:37 UTC
Views: 58
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