danny-avila librechat up to 0.8.0-rc1 /api/memories key/value resource consumption

Summaryinfo

A vulnerability has been found in danny-avila librechat up to 0.8.0-rc1 and classified as problematic. This vulnerability affects unknown code of the file /api/memories. The manipulation of the argument key/value leads to resource consumption. This vulnerability is documented as CVE-2025-8849. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in danny-avila librechat up to 0.8.0-rc1. It has been rated as problematic. This issue affects an unknown part of the file /api/memories. The manipulation of the argument key/value with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

LibreChat version 0.7.9 is vulnerable to a Denial of Service (DoS) attack due to unbounded parameter values in the `/api/memories` endpoint. The `key` and `value` parameters accept arbitrarily large inputs without proper validation, leading to a null pointer error in the Rust-based backend when excessively large values are submitted. This results in the inability to create new memories, impacting the stability of the service.

The advisory is shared at huntr.com. The identification of this vulnerability is CVE-2025-8849 since 08/10/2025. The exploitation is known to be easy. The attack may be initiated remotely. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 0.8.0-rc2 eliminates this vulnerability. Applying the patch edf33bedcbb08c33e59df76f06454ed7efd896f9 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Chat Software

Vendor

• danny-avila

Name

• librechat

Version

• 0.8.0-rc1

License

• open-source

Website

• Product: https://github.com/danny-avila/librechat/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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