MervinPraison PraisonAI up to 4.5.127 Recipe Registry server.py allocation of resources

Summaryinfo

A vulnerability, which was classified as problematic, has been found in MervinPraison PraisonAI up to 4.5.127. The affected element is an unknown function of the file server.py of the component Recipe Registry Handler. This manipulation causes allocation of resources. This vulnerability is handled as CVE-2026-40115. It is possible to launch the attack on the local host. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in MervinPraison PraisonAI up to 4.5.127 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file server.py of the component Recipe Registry Handler. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. The summary by CVE is:

PraisonAI is a multi-agent teams system. Prior to 4.5.128, the WSGI-based recipe registry server (server.py) reads the entire HTTP request body into memory based on the client-supplied Content-Length header with no upper bound. Combined with authentication being disabled by default (no token configured), any local process can send arbitrarily large POST requests to exhaust server memory and cause a denial of service. The Starlette-based server (serve.py) has RequestSizeLimitMiddleware with a 10MB limit, but the WSGI server lacks any equivalent protection. This vulnerability is fixed in 4.5.128.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-40115 since 04/09/2026. The exploitation appears to be easy. Attacking locally is a requirement. Technical details of the vulnerability 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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