CVE-2026-46348

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/mastodon/mastodon/security/advisories/GHSA-crr4-7rm4-8gpw

Configurations

No configuration.

History

24 Jun 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-24 20:16

Updated : 2026-06-25 18:16

NVD link : CVE-2026-46348

Mitre link : CVE-2026-46348

CVE.ORG link : CVE-2026-46348

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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