CVE-2025-23221

Summary: CVE-2025-23221 affects Fedify’s Webfinger handling, enabling an attacker to abuse lookupWebFinger to trigger an endless redirect loop and potential Blind SSRF, leading to Denial of Service. Multiple sources (Red Hat, NVD/NVD-like entries, OSV, GHSA advisories, Veracode) describe the issu...