CVE-2025-66035 (GCVE-0-2025-66035)

Vulnerability from cvelistv5 – Published: 2025-11-26 22:18 – Updated: 2026-06-02 13:00
VLAI
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
7.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-28 18:28 UTC
CWE
  • CWE-201 - Insertion of Sensitive Information Into Sent Data
  • CWE-359 - Exposure of Private Personal Information to an Unauthorized Actor
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7659 records in the last 180 days details
References
Impacted 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 Create a notification for this product.
Siemens RUGGEDCOM RST2428P Affected: 0 , < V4.0 (custom)
guessed Create a notification for this product.
Siemens SIDIS Prime Affected: 0 , < V4.0.800 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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                "subConfidentialityImpact": "HIGH",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N",
                "version": "4.0",
                "vulnAvailabilityImpact": "NONE",
                "vulnConfidentialityImpact": "NONE",
                "vulnIntegrityImpact": "NONE"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-201",
                  "description": "CWE-201: Insertion of Sensitive Information Into Sent Data",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            },
            {
              "descriptions": [
                {
                  "cweId": "CWE-359",
                  "description": "CWE-359: Exposure of Private Personal Information to an Unauthorized Actor",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-11-26T22:18:35.692Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/angular/angular/security/advisories/GHSA-58c5-g7wp-6w37",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/angular/angular/security/advisories/GHSA-58c5-g7wp-6w37"
            },
            {
              "name": "https://github.com/angular/angular/commit/0276479e7d0e280e0f8d26fa567d3b7aa97a516f",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/angular/angular/commit/0276479e7d0e280e0f8d26fa567d3b7aa97a516f"
            },
            {
              "name": "https://github.com/angular/angular/commit/05fe6686a97fa0bcd3cf157805b3612033f975bc",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/angular/angular/commit/05fe6686a97fa0bcd3cf157805b3612033f975bc"
            },
            {
              "name": "https://github.com/angular/angular/commit/3240d856d942727372a705252f7c8c115394a41e",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/angular/angular/commit/3240d856d942727372a705252f7c8c115394a41e"
            },
            {
              "name": "https://github.com/angular/angular/releases/tag/19.2.16",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/angular/angular/releases/tag/19.2.16"
            },
            {
              "name": "https://github.com/angular/angular/releases/tag/20.3.14",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/angular/angular/releases/tag/20.3.14"
            },
            {
              "name": "https://github.com/angular/angular/releases/tag/21.0.1",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/angular/angular/releases/tag/21.0.1"
            }
          ],
          "source": {
            "advisory": "GHSA-58c5-g7wp-6w37",
            "discovery": "UNKNOWN"
          },
          "title": "Angular HTTP Client Has XSRF Token Leakage via Protocol-Relative URLs"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2025-66035",
        "datePublished": "2025-11-26T22:18:35.692Z",
        "dateReserved": "2025-11-21T01:08:02.615Z",
        "dateUpdated": "2026-06-02T13:00:29.580Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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