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CVE-2026-56663— AutoGPT: SSRF-to-RCE Chain in `SendWebRequestBlock` via IP validation bypass and internal `pg-meta` access

Quick assessment

Affected
Significant-Gravitas AutoGPT
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Significant-Gravitas AutoGPT是Significant-Gravitas的人工智能软件。 Significant-Gravitas AutoGPT 0.6.52之前版本存在服务端请求伪造漏洞，该漏洞源于_is_ip_blocked()函数未正确规范化IPv4映射IPv6地址且未阻止特殊用途范围，可能导致经过身份验证的攻击者绕过SSRF/私有IP保护，访问内部网络服务。

CVSS 8.5 · High EPSS 0.37% · P29

Affected Version Matrix 1

VendorProduct Version RangeStatus
Significant-Gravitas AutoGPT < 0.6.52 affected
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I. Basic Information for CVE-2026-56663

Vulnerability Information
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Vulnerability Title
AutoGPT: SSRF-to-RCE Chain in `SendWebRequestBlock` via IP validation bypass and internal `pg-meta` access
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Significant-Gravitas AutoGPT 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Significant-Gravitas AutoGPT是Significant-Gravitas的人工智能软件。 Significant-Gravitas AutoGPT 0.6.52之前版本存在服务端请求伪造漏洞，该漏洞源于_is_ip_blocked()函数未正确规范化IPv4映射IPv6地址且未阻止特殊用途范围，可能导致经过身份验证的攻击者绕过SSRF/私有IP保护，访问内部网络服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Significant-Gravitas AutoGPT < 0.6.52 -

II. Public POCs for CVE-2026-56663

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6245 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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Trigger conditions & impact
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Exploit chain & mitigation
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III. Intelligence Information for CVE-2026-56663

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Vendor Advisories for CVE-2026-56663 (1)

Same Patch Batch · Significant-Gravitas · 2026-06-26 · 4 CVEs total

CVE-2026-56823 5.4 MEDIUM AutoGPT: IDOR in Webhook Ping Endpoint Allows Enumeration and Cross-User Ping Triggering
CVE-2025-32394 AutoGPT: There is a DoS vulnerability in AITextSummarizerBlock
CVE-2025-32423 AutoGPT: There is a DoS vulnerability in ExtractTextInformationBlock

IV. Related Vulnerabilities

Same product: AutoGPT
Same vendor: Significant-Gravitas
Same weakness: CWE-918

V. Comments for CVE-2026-56663

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