CVE-2026-33234
MediumCVSS 5.0Exploitation Probability (EPSS)
Low risk23th percentile - higher than 23% of all known CVEs
Summary
In AutoGPT (versions 0.1.0 through 0.6.51), the SendEmailBlock accepts user-supplied smtp_server and smtp_port parameters and passes them directly to smtplib.SMTP() without IP address validation, bypassing SSRF protections. An authenticated user can perform internal network port scanning and service fingerprinting.
Risk Assessment
An attacker can scan the internal network and identify services, potentially leading to further attacks on internal resources.
Recommendation
Update AutoGPT to version 0.6.52 or later, which contains a fix.
Original NVD description (English source)
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.