CVE-2026-6616: SuperAGI SSRF Vulnerability

CVE-2026-6616 Overview

A Server-Side Request Forgery (SSRF) vulnerability has been identified in TransformerOptimus SuperAGI up to version 0.0.14. This vulnerability affects the extract_with_bs4, extract_with_3k, and extract_with_lxml functions within the superagi/helper/webpage_extractor.py file of the WebScraperTool component. An authenticated attacker can exploit this vulnerability remotely to manipulate server-side requests, potentially accessing internal resources or services that should not be publicly accessible.

Critical Impact

Authenticated attackers can leverage this SSRF vulnerability to make arbitrary requests from the SuperAGI server, potentially accessing internal services, cloud metadata endpoints, or sensitive internal network resources.

Affected Products

• TransformerOptimus SuperAGI version 0.0.14 and earlier
• SuperAGI WebScraperTool component
• Systems utilizing the webpage_extractor.py helper module

Discovery Timeline

• 2026-04-20 - CVE-2026-6616 published to NVD
• 2026-04-22 - Last updated in NVD database

Technical Details for CVE-2026-6616

Vulnerability Analysis

This SSRF vulnerability (CWE-918) exists in the web scraping functionality of SuperAGI, an autonomous AI agent framework. The vulnerable functions extract_with_bs4, extract_with_3k, and extract_with_lxml in the webpage_extractor.py helper module fail to properly validate or sanitize user-supplied URLs before making server-side HTTP requests.

The WebScraperTool is designed to fetch and parse web content for AI agent operations. However, without adequate input validation, an authenticated user can supply malicious URLs that point to internal network addresses, localhost services, or cloud provider metadata endpoints (such as 169.254.169.254 on AWS). This allows attackers to bypass network segmentation and access resources that would otherwise be protected from external access.

Root Cause

The root cause of this vulnerability is insufficient input validation and URL sanitization in the webpage extraction functions. The affected functions accept user-controlled URL parameters and proceed to make HTTP requests without verifying that the target URL points to an authorized external resource. There is no allowlist/denylist implementation to prevent requests to internal IP ranges, localhost addresses, or sensitive metadata endpoints.

Attack Vector

The attack requires network access and low-privilege authentication to the SuperAGI system. An attacker can supply a crafted URL to the WebScraperTool that targets internal services or cloud metadata endpoints.

The exploitation mechanism involves providing a malicious URL (such as http://169.254.169.254/latest/meta-data/ for AWS environments or http://localhost:6379/ for local Redis instances) to the web scraping functionality. The server then makes the request on behalf of the attacker, returning potentially sensitive data or interacting with internal services.

A proof-of-concept demonstrating this vulnerability has been publicly disclosed. For technical details, see the GitHub Gist PoC.

Detection Methods for CVE-2026-6616

Indicators of Compromise

• Outbound HTTP requests from SuperAGI servers to internal IP ranges (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16)
• Requests to cloud metadata endpoints (169.254.169.254, metadata.google.internal)
• WebScraperTool activity targeting localhost or loopback addresses (127.0.0.1, ::1)
• Unexpected data exfiltration patterns from internal services through SuperAGI logs

Detection Strategies

• Monitor outbound network connections from SuperAGI application servers for requests to internal or private IP ranges
• Implement network-level detection rules to alert on requests to cloud metadata endpoints originating from application servers
• Review SuperAGI application logs for suspicious URL patterns in WebScraperTool requests
• Deploy web application firewall (WAF) rules to detect and block SSRF attack patterns

Monitoring Recommendations

• Enable verbose logging for the webpage_extractor.py module to capture all URL requests
• Configure network monitoring to detect lateral movement attempts originating from SuperAGI servers
• Set up alerts for any requests to RFC 1918 private address spaces from web scraping components

How to Mitigate CVE-2026-6616

Immediate Actions Required

• Restrict network egress from SuperAGI servers to only necessary external destinations
• Implement network segmentation to limit SuperAGI server access to internal resources
• Consider disabling or restricting access to the WebScraperTool functionality until a patch is available
• Review and audit recent WebScraperTool usage for signs of exploitation

Patch Information

At the time of publication, the vendor (TransformerOptimus) has not responded to disclosure attempts and no official patch is available. Organizations should implement the workarounds described below and monitor for vendor updates. Additional vulnerability details are available at VulDB #358251.

Workarounds

• Implement URL allowlisting to restrict WebScraperTool requests to approved external domains only
• Deploy network-level controls to block outbound requests to internal IP ranges and cloud metadata endpoints
• Use a forward proxy for all outbound HTTP requests from SuperAGI with strict URL filtering policies
• Consider running SuperAGI in an isolated network segment with no access to sensitive internal services

# Example: iptables rules to block SSRF to internal networks and metadata endpoints
# Apply to SuperAGI server

# Block requests to AWS metadata endpoint
iptables -A OUTPUT -d 169.254.169.254 -j DROP

# Block requests to private IP ranges
iptables -A OUTPUT -d 10.0.0.0/8 -j DROP
iptables -A OUTPUT -d 172.16.0.0/12 -j DROP
iptables -A OUTPUT -d 192.168.0.0/16 -j DROP

# Block localhost access (if needed for SSRF prevention)
iptables -A OUTPUT -d 127.0.0.0/8 -j DROP