1Panel-dev MaxKB up to 2.10.4-lts Chat Share improper authorization

Summaryinfo

A vulnerability described as critical has been identified in 1Panel-dev MaxKB up to 2.10.4-lts. This issue affects some unknown processing of the component Chat Share. Executing a manipulation can lead to improper authorization. This vulnerability is registered as CVE-2026-79917. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability has been found in 1Panel-dev MaxKB up to 2.10.4-lts and classified as critical. This vulnerability affects an unknown code block of the component Chat Share. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

MaxKB is an open-source AI assistant for enterprise. In 2.7.0 through 2.10.4-lts, POST /chat/api/{application_id}/chat/{chat_id}/share_chat verifies that a conversation exists but does not verify that it belongs to the authenticated chat_user_id or to the application bound to the caller's token. An attacker with any chat token and a known victim chat_id can create an unauthenticated public ChatShareLink exposing the victim's conversation and can create PublicFileAccess state that makes associated files retrievable without credentials, with no available revoke path. No fixed version is available as of this review.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-79917 since 08/25/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/21/2026). The MITRE ATT&CK project declares the attack technique as T1548.002.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• 1Panel-dev

Name

• MaxKB

Version

• 2.10.4-lts

Website

• Product: https://github.com/1Panel-dev/MaxKB/

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