CVE-2026-56663: Significant-Gravitas Autogpt

High severity, CVSS 8.5. EPSS: 0.4% chance of exploitation in the next 30 days.

AutoGPT is a workflow automation platform for creating, deploying, and managing continuous artificial intelligence agents. Prior to 0.6.52, an authenticated user can bypass the SSRF / private-IP protections in SendWebRequestBlock and reach internal network services. _is_ip_blocked() in backend/backend/util/request.py does not normalize IPv4-mapped IPv6 addresses before checking resolved IPs against the blocked IPv4 ranges, and does not block special-use ranges such as 100.64.0.0/10 (CGNAT, RFC 6598). A hostname that resolves to an IPv4-mapped IPv6 address therefore passes validation and the request reaches the embedded internal IPv4 endpoint. This affects all AutoGPT Platform deployments. This vulnerability is fixed in 0.6.52.

Affected products

• Significant-Gravitas Autogpt: before 0.6.52 (fixed in 0.6.52)

Published 2026-06-26. Last modified 2026-06-26.