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CVE-2026-33234— AutoGPT: SendEmailBlock's IP blocklist bypass allows SSRF via user-controlled SMTP server

Quick assessment

Affected
Significant-Gravitas AutoGPT
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

AutoGPT是AutoGPT开源的一个工具。用于让每个人都能使用和构建可访问的AI。 AutoGPT 0.1.0版本至0.6.51版本存在代码问题漏洞，该漏洞源于SendEmailBlock接受用户提供的smtp_server和smtp_port参数，未进行IP地址验证，绕过SSRF保护，导致内部网络端口扫描和服务指纹识别。

CVSS 5.0 · Medium EPSS 0.37% · P29

Affected Version Matrix 1

VendorProduct Version RangeStatus
Significant-Gravitas AutoGPT >= 0.1.0, < 0.6.52 affected
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I. Basic Information for CVE-2026-33234

Vulnerability Information
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Vulnerability Title
AutoGPT: SendEmailBlock's IP blocklist bypass allows SSRF via user-controlled SMTP server
Source: CVE Program / CVE List V5
Vulnerability Description
AutoGPT is a workflow automation platform for creating, deploying, and managing continuous artificial intelligence agents. In versions 0.1.0 through 0.6.51, SendEmailBlock in autogpt_platform/backend/backend/blocks/email_block.py accepts a user-supplied smtp_server (string) and smtp_port (integer) as per-execution block inputs, then passes them directly to Python's smtplib.SMTP() to open a raw TCP connection with no IP address validation. This completely bypasses the platform's hardened SSRF protections in backend/util/request.py — the validate_url_host() function and BLOCKED_IP_NETWORKS blocklist that every other block uses to block connections to private, loopback, link-local, and cloud metadata addresses. An authenticated user on a shared AutoGPT deployment can use this to perform non-blind internal network port scanning and service fingerprinting: smtplib reads the target's TCP banner on connect and embeds it in the exception message, which is persisted as user-visible block output via the execution framework. This issue has been fixed in version 0.6.52.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
AutoGPT 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AutoGPT是AutoGPT开源的一个工具。用于让每个人都能使用和构建可访问的AI。 AutoGPT 0.1.0版本至0.6.51版本存在代码问题漏洞，该漏洞源于SendEmailBlock接受用户提供的smtp_server和smtp_port参数，未进行IP地址验证，绕过SSRF保护，导致内部网络端口扫描和服务指纹识别。
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 >= 0.1.0, < 0.6.52 -

II. Public POCs for CVE-2026-33234

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III. Intelligence Information for CVE-2026-33234

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Patches & Fixes for CVE-2026-33234 (1)

Vendor Advisories for CVE-2026-33234 (1)

Same Patch Batch · Significant-Gravitas · 2026-05-19 · 3 CVEs total

CVE-2026-33233 7.6 HIGH AutoGPT Platform: Remote Code Execution via Unsafe Pickle Deserialization of Redis Cache E
CVE-2026-33232 7.5 HIGH AutoGPT: Unauthenticated DoS via Disk Space Exhaustion

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-33234

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