CVE-2026-55523
Received Received - Intake

Server-Side Request Forgery in PraisonAI Web Crawl Tool

Publication date: 2026-08-05

Last updated on: 2026-08-05

Assigner: GitHub, Inc.

Description
PraisonAI is a multi-agent teams system. In versions 1.5.128 through 1.6.57, the praisonaiagents.tools.web_crawl_tools.web_crawl() function is vulnerable to server-side request forgery. While it validates the initially supplied URL and blocks direct loopback and private destinations, its default httpx fallback uses httpx.Client(follow_redirects=True) and does not revalidate intermediate or final redirect targets. An attacker who can influence a URL passed to web_crawl(), directly or through an agent or tool workflow, can supply an attacker-controlled public URL that passes the initial host check and then redirects to loopback, private-network, or cloud metadata endpoints reachable from the host, with the redirected response body returned in the web_crawl() result. This constitutes an incomplete fix and patch bypass for the previously disclosed web_crawl SSRF class (GHSA-qq9r-63f6-v542 / CVE-2026-40160 and GHSA-8f4v-xfm9-3244), since the guard validates only the requested URL and not the destination actually fetched after redirection. This issue has been fixed in version 1.6.58.

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Meta Information

Published
2026-08-05
Last Modified
2026-08-05
Generated
2026-08-06
AI Q&A
2026-08-05
EPSS Evaluated
N/A
NVD
CVE-2026-55523
EUVD
EUVD-2026-53582

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
praisonai praisonaiagents From 1.5.128 (inc) to 1.6.57 (inc)
praisonai praisonaiagents 1.6.58

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-918 The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Attack-Flow Graph

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Executive Summary

This vulnerability is a server-side request forgery (SSRF) in PraisonAI versions 1.5.128 through 1.6.57. The web_crawl() function validates the initial URL but fails to revalidate redirects. Attackers can exploit this by providing a public URL that redirects to private or loopback addresses, bypassing security checks and accessing internal endpoints.

Detection Guidance

Detecting this SSRF vulnerability requires monitoring network traffic for unexpected outbound requests to loopback, private, or cloud metadata endpoints. Check PraisonAI logs for web_crawl() calls with URLs that redirect to internal addresses. Use tools like tcpdump or Wireshark to inspect traffic from the PraisonAI host for connections to 127.0.0.1, 169.254.169.254, or private IP ranges.

Impact Analysis

An attacker could access internal services, cloud metadata, or private network resources from the vulnerable server. This may lead to data leaks, unauthorized access, or further attacks against internal systems. The impact depends on the server's network configuration and exposed services.

Compliance Impact

This SSRF vulnerability could lead to unauthorized data exposure, violating GDPR's data protection principles or HIPAA's security requirements for protected health information. Organizations using affected versions may face compliance violations and potential penalties.

Mitigation Strategies

Upgrade PraisonAI to version 1.6.58 or later to address the SSRF flaw. If upgrading is not immediately possible, restrict network access for the PraisonAI process to prevent outbound connections to sensitive endpoints. Review and validate all URLs passed to web_crawl() to ensure they do not redirect to internal or restricted targets.

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