CVE-2026-77525 MaxKB: Management chat-record routes trust path application_id but load ChatRecord by global chat_id
Attackers can read and modify victim chat records by exploiting missing authorization checks on chat IDs in MaxKB management routes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-77525?
CVE-2026-77525 is a medium-severity missing authorization vulnerability in 1Panel-dev MaxKB, published on 21 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
MaxKB is an open-source AI assistant for enterprise. In 2.10.2-lts and earlier, management chat-record routes authorize the path application_id but load records using global chat_id and chat_record_id values without confirming that the chat belongs to the authorized application. A normal user in the same workspace who knows the chat_id of a persisted non-debug record for a victim's published application can place it under a separate attacker-owned application path to read victim chat records. An attacker with an owned knowledge base and document can also use add_knowledge to copy victim answers while updating the victim record's improve_paragraph_id_list. No fixed version is available as of this review.
Weakness: CWE-862
Which versions are affected by CVE-2026-77525?
How do I fix CVE-2026-77525?
No fix has been published for CVE-2026-77525 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-77525 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-77525 exists.