CVE-2026-46348
NONE—CVSS v3
—CVSS v2
0.34%
EPSS (exploit probability)
CWE-918CWE
Description
Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.5.10, 4.4.17, and 4.3.23, the list of disallowed IP address ranges was lacking an IP address range that can be used to reach local IP addresses. An attacker can use an IP address in the affected range to make Mastodon perform HTTP requests against loopback interfaces, potentially allowing access to otherwise private resources and services. This vulnerability is fixed in 4.5.10, 4.4.17, and 4.3.23.
Affected routers (0)
No routers currently mapped to this CVE in our database.