Significant-Gravitas AutoGPT up to 0.6.51 IPv4 Endpoint request.py _is_ip_blocked server-side request forgery

Summaryinfo

A vulnerability, which was classified as critical, has been found in Significant-Gravitas AutoGPT up to 0.6.51. Affected by this issue is the function _is_ip_blocked of the file backend/backend/util/request.py of the component IPv4 Endpoint. This manipulation causes server-side request forgery. This vulnerability is handled as CVE-2026-56663. The attack can be initiated remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Significant-Gravitas AutoGPT up to 0.6.51. Affected by this vulnerability is the function _is_ip_blocked of the file backend/backend/util/request.py of the component IPv4 Endpoint. The manipulation with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-56663 since 06/22/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available.

Upgrading to version 0.6.52 eliminates this vulnerability.

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Productinfo

Vendor

• Significant-Gravitas

Name

• AutoGPT

Version

• 0.6.0
• 0.6.1
• 0.6.2
• 0.6.3
• 0.6.4
• 0.6.5
• 0.6.6
• 0.6.7
• 0.6.8
• 0.6.9
• 0.6.10
• 0.6.11
• 0.6.12
• 0.6.13
• 0.6.14
• 0.6.15
• 0.6.16
• 0.6.17
• 0.6.18
• 0.6.19
• 0.6.20
• 0.6.21
• 0.6.22
• 0.6.23
• 0.6.24
• 0.6.25
• 0.6.26
• 0.6.27
• 0.6.28
• 0.6.29
• 0.6.30
• 0.6.31
• 0.6.32
• 0.6.33
• 0.6.34
• 0.6.35
• 0.6.36
• 0.6.37
• 0.6.38
• 0.6.39
• 0.6.40
• 0.6.41
• 0.6.42
• 0.6.43
• 0.6.44
• 0.6.45
• 0.6.46
• 0.6.47
• 0.6.48
• 0.6.49
• 0.6.50
• 0.6.51

Website

• Product: https://github.com/Significant-Gravitas/AutoGPT/

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