vulnwire
7.7high

CVE-2025-66035

Angular HTTP Client Has XSRF Token Leakage via Protocol-Relative URLs

Also known as GHSA-58c5-g7wp-6w37

Published 11 mo ago · modified 19 d ago · JSON

CVSS
7.7
v4.0 · CNA
CISA KEV
No
not known exploited
EPSS
0.7%
percentile 54%
Public exploits
0
none known

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.

CISA SSVC assessment

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
11 mo ago

Exploit prediction (EPSS)

0.72% probability of exploitation in the next 30 days, higher than 54% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
CNA4.07.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
CNA4.07.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

EcosystemPackageAffectedFixed in
npm@angular/common
>=21.0.0-next.0, <21.0.1
>=20.0.0-next.0, <20.3.14
<19.2.16
21.0.1
20.3.14
19.2.16

Affected products

  • angular angular
  • Siemens RUGGEDCOM RST2428P
  • Siemens SIDIS Prime

Classification

Weakness
  • CWE-201 Insertion of Sensitive Information Into Sent Data
  • CWE-359 Exposure of Private Personal Information to an Unauthorized Actor

References

  • github.com /angular/angular/security/advisories/GHSA-58c5-g7wp-6w37 · x_refsource_CONFIRM
  • github.com /angular/angular/commit/0276479e7d0e280e0f8d26fa567d3b7aa97a516f · x_refsource_MISC
  • github.com /angular/angular/commit/05fe6686a97fa0bcd3cf157805b3612033f975bc · x_refsource_MISC
  • github.com /angular/angular/commit/3240d856d942727372a705252f7c8c115394a41e · x_refsource_MISC
  • github.com /angular/angular/releases/tag/19.2.16 · x_refsource_MISC
  • github.com /angular/angular/releases/tag/20.3.14 · x_refsource_MISC
  • github.com /angular/angular/releases/tag/21.0.1 · x_refsource_MISC
  • cert-portal.siemens.com /productcert/html/ssa-485750.html
  • cert-portal.siemens.com /productcert/html/ssa-253495.html
  • nvd.nist.gov /vuln/detail/CVE-2025-66035 · advisory
  • github.com /angular/angular · package

Sources

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