danny-avila librechat 0.7.8 Conversation improper authorization

Summaryinfo

A vulnerability, which was classified as critical, has been found in danny-avila librechat 0.7.8. Affected by this issue is some unknown functionality of the component Conversation Handler. The manipulation leads to improper authorization. This vulnerability is referenced as CVE-2025-6088. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in danny-avila librechat 0.7.8 and classified as critical. This issue affects an unknown functionality of the component Conversation Handler. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In version 0.7.8 of danny-avila/librechat, improper authorization controls in the conversation sharing feature allow unauthorized access to other users' conversations if the conversation ID is known. Although UUIDv4 conversation IDs are generated server-side and are difficult to brute force, they can be obtained from less-protected sources such as server-side access logs, browser history, or screenshots. The vulnerability permits a logged-in user to gain read-only access to another user's conversations by exploiting the `/api/share/conversationID` endpoint, which lacks authorization checks. This issue is resolved in version v0.7.9-rc1.

It is possible to read the advisory at huntr.com. The identification of this vulnerability is CVE-2025-6088 since 06/14/2025. The exploitation is known to be difficult. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

Upgrading to version 0.7.9-rc1 eliminates this vulnerability. Applying the patch 3af2666890bbf291cb7b9f3e03592d54714f0ff5 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.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202509-1728) and EUVD (EUVD-2025-27623). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Chat Software

Vendor

• danny-avila

Name

• librechat

Version

• 0.7.8

License

• open-source

Website

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

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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