CVE-2025-66035 (GCVE-0-2025-66035)
Vulnerability from cvelistv5 – Published: 2025-11-26 22:18 – Updated: 2026-06-02 13:00
VLAI
EPSS
VEX
Title
Angular HTTP Client Has XSRF Token Leakage via Protocol-Relative URLs
Summary
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to versions 19.2.16, 20.3.14, and 21.0.1, there is a XSRF token leakage via protocol-relative URLs in angular HTTP clients. The vulnerability is a Credential Leak by App Logic that leads to the unauthorized disclosure of the Cross-Site Request Forgery (XSRF) token to an attacker-controlled domain. Angular's HttpClient has a built-in XSRF protection mechanism that works by checking if a request URL starts with a protocol (http:// or https://) to determine if it is cross-origin. If the URL starts with protocol-relative URL (//), it is incorrectly treated as a same-origin request, and the XSRF token is automatically added to the X-XSRF-TOKEN header. This issue has been patched in versions 19.2.16, 20.3.14, and 21.0.1. A workaround for this issue involves avoiding using protocol-relative URLs (URLs starting with //) in HttpClient requests. All backend communication URLs should be hardcoded as relative paths (starting with a single /) or fully qualified, trusted absolute URLs.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-28 18:28 UTC
CWE
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://github.com/angular/angular/security/advis… | x_refsource_CONFIRM |
| https://github.com/angular/angular/commit/0276479… | x_refsource_MISC |
| https://github.com/angular/angular/commit/05fe668… | x_refsource_MISC |
| https://github.com/angular/angular/commit/3240d85… | x_refsource_MISC |
| https://github.com/angular/angular/releases/tag/19.2.16 | x_refsource_MISC |
| https://github.com/angular/angular/releases/tag/20.3.14 | x_refsource_MISC |
| https://github.com/angular/angular/releases/tag/21.0.1 | x_refsource_MISC |
| https://cert-portal.siemens.com/productcert/html/… | |
| https://cert-portal.siemens.com/productcert/html/… |
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| angular | angular |
Affected:
>= 21.0.0-next.0, < 21.0.1
Affected: >= 20.0.0-next.0, < 20.3.14 Affected: < 19.2.16 |
guessed | |
| Siemens | RUGGEDCOM RST2428P |
Affected:
0 , < V4.0
(custom)
|
guessed | |
| Siemens | SIDIS Prime |
Affected:
0 , < V4.0.800
(custom)
|
guessed |
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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