CVE-2026-47390
Received Received - Intake

SSRF Protection Bypass in PraisonAI

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: GitHub, Inc.

Description
PraisonAI is a multi-agent teams system. Prior to version 4.6.40 of PraisonAI, corresponding to version 1.6.40 of praisonaiagents, `spider_tools` URL validation can be bypassed using alternate loopback host encodings. The tool contains a URL validation function intended to block local or unsafe targets before fetching attacker-controlled URLs. However, the validation only blocks a small set of exact host strings such as `localhost` and `127.0.0.1`. It does not normalize hostnames, resolve DNS, parse numeric IPv4 variants, or validate the final resolved IP address before making the request. As a result, certain URLs may bypass the protection and still reach loopback services. After the weak validation passes, `scrape_page()` calls `requests.Session.get()` on the attacker-controlled URL. This allows an attacker who can influence URLs passed to `scrape_page`, `crawl`, or `extract_text` to induce SSRF requests against loopback-only services. This is a server-side request forgery protection bypass. PraisonAI version 4.6.40 and praisonaiagents version 1.6.40 contain a patch.

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Meta Information

Published
2026-07-21
Last Modified
2026-07-21
Generated
2026-07-21
AI Q&A
2026-07-21
EPSS Evaluated
N/A
NVD
CVE-2026-47390
EUVD
EUVD-2026-46278

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
mervinpraison praisonai to 4.6.40 (exc)
mervinpraison praisonaiagents to 1.6.40 (exc)

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 is a Server-Side Request Forgery (SSRF) protection bypass in PraisonAI versions before 4.6.40. The vulnerability allows attackers to bypass URL validation checks that block access to loopback services like localhost or 127.0.0.1. The validation fails to normalize hostnames or validate numeric IP variants, enabling attackers to use alternate encodings such as 'localhost.', '127.1', or '0x7f000001' to access restricted local services.

Detection Guidance

To detect this vulnerability, check if your PraisonAI version is <= 4.6.39 or praisonaiagents version is <= 1.6.39. Test URL validation bypasses by attempting to access loopback services using alternate encodings like localhost., 127.1, 0177.0.0.1, or 0x7f000001. Monitor network logs for unexpected outbound requests to loopback addresses.

Impact Analysis

An attacker could exploit this to make unauthorized requests to internal or loopback services running on the server. This may expose sensitive data, interact with internal APIs, or trigger unintended actions in local services. The attack requires local access but no privileges or user interaction.

Compliance Impact

This vulnerability could lead to unauthorized access to internal systems, potentially violating data protection requirements under GDPR or HIPAA. Exposure of sensitive data or internal services may result in non-compliance with confidentiality and access control mandates.

Mitigation Strategies

Upgrade PraisonAI to version 4.6.40 or higher and praisonaiagents to version 1.6.40 or higher. Ensure URL validation is updated to block all loopback address encodings. Review and restrict access to loopback services. Implement additional SSRF protections like network-level restrictions.

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