MervinPraison PraisonAI up to 4.5.127 HTTP POST Request /api/v1/runs webhook_url server-side request forgery

Summaryinfo

A vulnerability categorized as critical has been discovered in MervinPraison PraisonAI up to 4.5.127. The impacted element is the function webhook_url of the file /api/v1/runs of the component HTTP POST Request Handler. Executing a manipulation can lead to server-side request forgery. This vulnerability is registered as CVE-2026-40114. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in MervinPraison PraisonAI up to 4.5.127. This vulnerability affects the function webhook_url of the file /api/v1/runs of the component HTTP POST Request Handler. The manipulation with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

PraisonAI is a multi-agent teams system. Prior to 4.5.128, the /api/v1/runs endpoint accepts an arbitrary webhook_url in the request body with no URL validation. When a submitted job completes (success or failure), the server makes an HTTP POST request to this URL using httpx.AsyncClient. An unauthenticated attacker can use this to make the server send POST requests to arbitrary internal or external destinations, enabling SSRF against cloud metadata services, internal APIs, and other network-adjacent services. This vulnerability is fixed in 4.5.128.

The advisory is available at github.com. This vulnerability was named CVE-2026-40114 since 04/09/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

Upgrading to version 4.5.128 eliminates this vulnerability.

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Productinfo

Vendor

• MervinPraison

Name

• PraisonAI

Version

• 4.5.127

Website

• Product: https://github.com/MervinPraison/PraisonAI/

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