SSRF via DNS Rebinding in PraisonAI Web Crawl Tool

Executive Summary

CVE-2026-61430 is a high-severity SSRF vulnerability in PraisonAI's web_crawl tool. It allows DNS rebinding attacks because the tool validates hostnames at check time but re-resolves them at connection time without IP pinning. Attackers can bypass SSRF protections by manipulating DNS responses to expose internal HTTP responses from private or loopback services.

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Impact Analysis

This vulnerability allows unauthenticated attackers to retrieve internal HTTP response bodies from private or loopback services. If exploited, sensitive data or secrets could be exposed, even from services not directly accessible to the attacker. The impact includes potential data breaches, unauthorized access to internal systems, and compromise of confidential information.

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Compliance Impact

This vulnerability could lead to non-compliance with GDPR, HIPAA, and other regulations by exposing sensitive personal or health data. Organizations may face legal penalties, reputational damage, and loss of trust due to unauthorized data disclosure from internal services.

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Detection Guidance

Monitor network traffic for unusual DNS rebinding attempts or connections to private IP ranges from PraisonAI's web_crawl tool. Check logs for repeated hostname resolutions to the same domain resolving to different IPs. Use tools like tcpdump or Wireshark to inspect HTTP requests originating from PraisonAI for internal IP addresses or loopback services.

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Mitigation Strategies

Upgrade PraisonAI to version 1.6.78 or later to address the vulnerability. Implement IP pinning in the web_crawl tool to prevent DNS rebinding attacks. Disable automatic redirect following or ensure each redirect hop is re-validated with IP pinning. Restrict access to internal services and monitor for unauthorized access attempts.

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