This advisory has been withdrawn because it is a duplicate of GHSA-p4hc-9pjh-55c8. This link is maintained to preserve external references.
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.
{
"cwe_ids": [
"CWE-918"
],
"github_reviewed": true,
"github_reviewed_at": "2025-07-28T16:42:51Z",
"nvd_published_at": "2025-07-28T05:16:20Z",
"severity": "HIGH"
}