CVE-2026-79917 — MaxKB: Chat share-link endpoint missing owner check: a chat token can publish another user's conversation

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
1Panel-dev / MaxKB	affected >= 2.7.0, <= 2.10.4-lts

CWE

CWE-285, CWE-639

References

https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-m8gr-554p-8r82

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.