Angular Service Worker Policy-Bypass & Credential-Stripping Vulnerabilities
Priority LOW 25CWE-200Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- High
- Attack requirements
- Present
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00228 13th percentileScored 2026-11-07
Fix Fixed angular (angular): 22.0.0-rc.2, 21.2.15, 20.3.22 +1@angular/service-worker (npm): 22.0.0-rc.2, 20.3.22, 19.2.23 +1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| angular | angular | 22.0.0-next.0 to before 22.0.0-rc.2; 21.0.0-next.0 to before 21.2.15; 20.0.0-next.0 to before 20.3.22; 19.0.0-next.0 to before 19.2.23; up to 18.2.14 | 22.0.0-rc.2, 21.2.15, 20.3.22, 19.2.23 | Patch available | CNA |
| — | @angular/service-worker (npm) | 22.0.0-next.0 to before 22.0.0-rc.2 | 22.0.0-rc.2 | Patch available | GHSA-gv2q-mqqv-365m |
| — | @angular/service-worker (npm) | 20.0.0-next.0 to before 20.3.22 | 20.3.22 | Patch available | GHSA-gv2q-mqqv-365m |
| — | @angular/service-worker (npm) | 19.0.0-next.0 to before 19.2.23 | 19.2.23 | Patch available | GHSA-gv2q-mqqv-365m |
| — | @angular/service-worker (npm) | up to 18.2.14 | — | No fix listed | GHSA-gv2q-mqqv-365m |
| — | @angular/service-worker (npm) | 21.0.0-next.0 to before 21.2.15 | 21.2.15 | Patch available | GHSA-gv2q-mqqv-365m |
- angular Vendorangular Affected 22.0.0-next.0 to before 22.0.0-rc.2; 21.0.0-next.0 to before 21.2.15; 20.0.0-next.0 to before 20.3.22; 19.0.0-next.0 to before 19.2.23; up to 18.2.14 Fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, 19.2.23 Patch available CNA
- @angular/service-worker (npm) Vendor— Affected 22.0.0-next.0 to before 22.0.0-rc.2 Fixed in 22.0.0-rc.2 Patch available GHSA-gv2q-mqqv-365m
- @angular/service-worker (npm) Vendor— Affected 20.0.0-next.0 to before 20.3.22 Fixed in 20.3.22 Patch available GHSA-gv2q-mqqv-365m
- @angular/service-worker (npm) Vendor— Affected 19.0.0-next.0 to before 19.2.23 Fixed in 19.2.23 Patch available GHSA-gv2q-mqqv-365m
- @angular/service-worker (npm) Vendor— Affected up to 18.2.14 Fixed in — No fix listed GHSA-gv2q-mqqv-365m
- @angular/service-worker (npm) Vendor— Affected 21.0.0-next.0 to before 21.2.15 Fixed in 21.2.15 Patch available GHSA-gv2q-mqqv-365m
CPE configurations NVD · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:* | up to 18.2.14; 19.0.0 to before 19.2.23; 20.0.0 to before 20.3.22; 21.0.0 to before 21.2.15 | Vulnerable | angular |
| cpe:2.3:a:angular:angular:22.0.0:next0:*:*:*:node.js:*:* | 22.0.0 next0 | Vulnerable | angular |
| cpe:2.3:a:angular:angular:22.0.0:next1:*:*:*:node.js:*:* | 22.0.0 next1 | Vulnerable | angular |
| cpe:2.3:a:angular:angular:22.0.0:next10:*:*:*:node.js:*:* | 22.0.0 next10 | Vulnerable | angular |
| cpe:2.3:a:angular:angular:22.0.0:next11:*:*:*:node.js:*:* | 22.0.0 next11 | Vulnerable | angular |
| cpe:2.3:a:angular:angular:22.0.0:next12:*:*:*:node.js:*:* | 22.0.0 next12 | Vulnerable | angular |
| cpe:2.3:a:angular:angular:22.0.0:next2:*:*:*:node.js:*:* | 22.0.0 next2 | Vulnerable | angular |
| cpe:2.3:a:angular:angular:22.0.0:next3:*:*:*:node.js:*:* | 22.0.0 next3 | Vulnerable | angular |
| cpe:2.3:a:angular:angular:22.0.0:next4:*:*:*:node.js:*:* | 22.0.0 next4 | Vulnerable | angular |
| cpe:2.3:a:angular:angular:22.0.0:next5:*:*:*:node.js:*:* | 22.0.0 next5 | Vulnerable | angular |
- cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:* Versions up to 18.2.14; 19.0.0 to before 19.2.23; 20.0.0 to before 20.3.22; 21.0.0 to before 21.2.15 Vulnerable ·angular
- cpe:2.3:a:angular:angular:22.0.0:next0:*:*:*:node.js:*:* Versions 22.0.0 next0 Vulnerable ·angular
- cpe:2.3:a:angular:angular:22.0.0:next1:*:*:*:node.js:*:* Versions 22.0.0 next1 Vulnerable ·angular
- cpe:2.3:a:angular:angular:22.0.0:next10:*:*:*:node.js:*:* Versions 22.0.0 next10 Vulnerable ·angular
- cpe:2.3:a:angular:angular:22.0.0:next11:*:*:*:node.js:*:* Versions 22.0.0 next11 Vulnerable ·angular
- cpe:2.3:a:angular:angular:22.0.0:next12:*:*:*:node.js:*:* Versions 22.0.0 next12 Vulnerable ·angular
- cpe:2.3:a:angular:angular:22.0.0:next2:*:*:*:node.js:*:* Versions 22.0.0 next2 Vulnerable ·angular
- cpe:2.3:a:angular:angular:22.0.0:next3:*:*:*:node.js:*:* Versions 22.0.0 next3 Vulnerable ·angular
- cpe:2.3:a:angular:angular:22.0.0:next4:*:*:*:node.js:*:* Versions 22.0.0 next4 Vulnerable ·angular
- cpe:2.3:a:angular:angular:22.0.0:next5:*:*:*:node.js:*:* Versions 22.0.0 next5 Vulnerable ·angular
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:angular:angular:22.0.0:next6:*:*:*:node.js:*:* | 22.0.0 next6 | Vulnerable | angular |
| cpe:2.3:a:angular:angular:22.0.0:next7:*:*:*:node.js:*:* | 22.0.0 next7 | Vulnerable | angular |
| cpe:2.3:a:angular:angular:22.0.0:next8:*:*:*:node.js:*:* | 22.0.0 next8 | Vulnerable | angular |
| cpe:2.3:a:angular:angular:22.0.0:next9:*:*:*:node.js:*:* | 22.0.0 next9 | Vulnerable | angular |
| cpe:2.3:a:angular:angular:22.0.0:rc0:*:*:*:node.js:*:* | 22.0.0 rc0 | Vulnerable | angular |
| cpe:2.3:a:angular:angular:22.0.0:rc1:*:*:*:node.js:*:* | 22.0.0 rc1 | Vulnerable | angular |
- cpe:2.3:a:angular:angular:22.0.0:next6:*:*:*:node.js:*:* Versions 22.0.0 next6 Vulnerable ·angular
- cpe:2.3:a:angular:angular:22.0.0:next7:*:*:*:node.js:*:* Versions 22.0.0 next7 Vulnerable ·angular
- cpe:2.3:a:angular:angular:22.0.0:next8:*:*:*:node.js:*:* Versions 22.0.0 next8 Vulnerable ·angular
- cpe:2.3:a:angular:angular:22.0.0:next9:*:*:*:node.js:*:* Versions 22.0.0 next9 Vulnerable ·angular
- cpe:2.3:a:angular:angular:22.0.0:rc0:*:*:*:node.js:*:* Versions 22.0.0 rc0 Vulnerable ·angular
- cpe:2.3:a:angular:angular:22.0.0:rc1:*:*:*:node.js:*:* Versions 22.0.0 rc1 Vulnerable ·angular
Remediation
- Fix · CNA angular (angular) Fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, 19.2.23
- Fix · GHSA-gv2q-mqqv-365m @angular/service-worker (npm) Fixed in 22.0.0-rc.2 Advisory →
- Fix · GHSA-gv2q-mqqv-365m @angular/service-worker (npm) Fixed in 20.3.22 Advisory →
- Fix · GHSA-gv2q-mqqv-365m @angular/service-worker (npm) Fixed in 19.2.23 Advisory →
- Fix · GHSA-gv2q-mqqv-365m @angular/service-worker (npm) Fixed in 21.2.15 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-50169
- 2026-10-03 Alias added: GHSA-gv2q-mqqv-365m
References
More Angular vulnerabilities
- TI-2026-60076 Angular: SSRF and Cross-Origin Credential Disclosure via URL Resolution Discrepancy in SSR CVSS 4.0HIGH 8.6
- TI-2026-60080 Angular: SSR XSS via Unescaped <template> Content Across DocumentFragment Boundaries in Fallback Raw-Content Elements CVSS 4.0HIGH 8.6
- TI-2026-60078 Angular: SSR XSS via Unescaped Processing Instruction (<?...?>) Nodes in Fallback Raw-Content Elements CVSS 4.0HIGH 8.6
- TI-2025-37971 A reflected cross-site scripting (XSS) vulnerability in CKeditor v46.1.0 & Angular… CVSS 3.1MEDIUM 5.4
- TI-2026-36931 Angular: URL Parser Differential in @angular/platform-server leading to SSRF Allowlist Bypass CVSS 4.0HIGH 8.8
- TI-2026-34131 Angular: SSRF via Hostname Hijacking in @angular/platform-server CVSS 4.0HIGH 8.8
Sources
- CVE-2026-50169 · CVE Program
- CVE-2026-50169 · NVD
- FIRST EPSS
- GHSA-gv2q-mqqv-365m · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences