GHSA-c2fv-2fmj-9xrx: Duplicate Advisory Ssrfcheck Has Incomplete IP Address Vulnerability

HIGH
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CVSS 8.2
CWE-918
Published
Advisory Summary

GHSA-c2fv-2fmj-9xrx is a HIGH (CVSS 8.2) ssrfcheck has incomplete ip address vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Duplicate Advisory libraries in the npm ecosystem. The issue involves ssrfcheck has incomplete ip address deny list that leads to server-side request forgery vulnerability. Remediation is available by upgrading affected packages to version 1.2.0.

GHSA-c2fv-2fmj-9xrx at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-c2fv-2fmj-9xrx
Severity HIGH
CVSS v3.1 Base Score 8.2
CWE Classification CWE-918: Server-Side Request Forgery (SSRF)
Affected Product Duplicate Advisory
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 8.2

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity Low (I:L)
Availability None (A:N)

How to Fix GHSA-c2fv-2fmj-9xrx

To remediate this vulnerability, upgrade all affected Duplicate Advisory dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

ssrfcheck fixed: 1.2.0 
npm install ssrfcheck@1.2.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls ssrfcheck

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-c2fv-2fmj-9xrx, inspect your project dependencies using npm:

npm ls ssrfcheck

Analyze the terminal output to locate any version of Duplicate Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.2.0), your application is affected.

Note: The npm ls ssrfcheck command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. In Duplicate Advisory, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-p4hc-9pjh-55c8. This link is maintained to preserve external references. ### Original Description Versions of the package ssrfcheck below 1.2.0 are vulnerable to Server-Side Request Forgery (SSRF) due to an incomplete denylist of IP address ranges. Specifically, the package fails to classify the reserved IP address space 224.0.0.0/4 (Multicast) as invalid. This oversight allows attackers to craft requests targeting these multicast addresses.

GHSA-c2fv-2fmj-9xrx Affected Duplicate Advisory Versions

1 component(s)
Fixed Versions:
1.2.0
Product / Package Ecosystem Affected Versions Fixed Version
ssrfcheck
npm/ssrfcheck
npm
< 1.2.0
1.2.0

References

NVD — GHSA-c2fv-2fmj-9xrx NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-8267
Duplicate Advisory Source Repository REPOSITORY
https://github.com/felippe-regazio/ssrfcheck/issues/5
Security Fix Commit FIX COMMIT
https://github.com/felippe-regazio/ssrfcheck/commit/9507b49fd764f2a1a1d1e3b9ee577b7545e6950e
Duplicate Advisory Source Repository REPOSITORY
https://gist.github.com/lirantal/2976840639df824cb3abe60d13c65e04
Duplicate Advisory Source Repository REPOSITORY
https://github.com/felippe-regazio/ssrfcheck
Duplicate Advisory Security Information SECURITY
https://security.snyk.io/vuln/SNYK-JS-SSRFCHECK-9510756

Frequently Asked Questions

What is GHSA-c2fv-2fmj-9xrx?
GHSA-c2fv-2fmj-9xrx is a security vulnerability in Duplicate Advisory involving ssrfcheck has Incomplete IP Address Deny List that leads to Server-Side Request Forgery Vulnerability under CWE-918: Server-Side Request Forgery (SSRF).
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 1.2.0 across affected packages: ssrfcheck.
What version fixes GHSA-c2fv-2fmj-9xrx?
Upgrading to 1.2.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ssrfcheck affected?
Yes, ssrfcheck is affected in releases prior to 1.2.0. Upgrade your dependency to 1.2.0 or later.
What is the CVSS score of GHSA-c2fv-2fmj-9xrx?
GHSA-c2fv-2fmj-9xrx has a CVSS v3.1 base score of 8.2 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.
What CWE is associated with GHSA-c2fv-2fmj-9xrx?
GHSA-c2fv-2fmj-9xrx is classified under CWE-918: Server-Side Request Forgery (SSRF) (The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.).
How can I check npm dependencies for GHSA-c2fv-2fmj-9xrx?
Run the dependency tree command: 'npm ls ssrfcheck'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-c2fv-2fmj-9xrx",
  "modified" : "2026-05-05T20:25:33Z",
  "published" : "2025-07-28T06:30:23Z",
  "withdrawn" : "2026-05-05T20:25:33Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: ssrfcheck has Incomplete IP Address Deny List that leads to Server-Side Request Forgery Vulnerability",
  "details" : "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-p4hc-9pjh-55c8. This link is maintained to preserve external references.\n\n### Original Description\nVersions of the package ssrfcheck below 1.2.0 are vulnerable to Server-Side Request Forgery (SSRF) due to an incomplete denylist of IP address ranges. Specifically, the package fails to classify the reserved IP address space 224.0.0.0/4 (Multicast) as invalid. This oversight allows attackers to craft requests targeting these multicast addresses.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "ssrfcheck"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-8267"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/felippe-regazio/ssrfcheck/issues/5"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/felippe-regazio/ssrfcheck/commit/9507b49fd764f2a1a1d1e3b9ee577b7545e6950e"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/lirantal/2976840639df824cb3abe60d13c65e04"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/felippe-regazio/ssrfcheck"
  }, {
    "type" : "WEB",
    "url" : "https://security.snyk.io/vuln/SNYK-JS-SSRFCHECK-9510756"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-918" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-07-28T16:42:51Z",
    "nvd_published_at" : "2025-07-28T05:16:20Z"
  }
}