CVE-2026-62857

Name of the Vulnerable Software and Affected Versions Fedify versions 1.2.0 through 1.9.12 Fedify versions 1.10.0 through 1.10.11 Fedify versions 2.0.0 through 2.0.21 Fedify versions 2.1.0 through 2.1.17 Fedify versions 2.2.0 through 2.2.6 Fedify versions 2.3.0 through 2.3.1

Description The getNodeInfo() function follows an attacker-controlled links[].href value from the /.well-known/nodeinfo endpoint without proper scheme, redirect, or private-address validation. This allows requests to be sent to loopback, link-local, cloud metadata, and private-network services, with the response bodies being returned to the attacker.

Recommendations Update to version 1.9.13 Update to version 1.10.12 Update to version 2.0.22 Update to version 2.1.18 Update to version 2.2.7 Update to version 2.3.2