Description
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.
Published: 2026-09-21
Score: 6.5 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Advisories

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History

Mon, 21 Sep 2026 21:00:00 +0000

Type Values Removed Values Added
Description 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.
Title MaxKB: Chat share-link endpoint missing owner check: a chat token can publish another user's conversation
Weaknesses CWE-285
CWE-639
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N'}


Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-21T20:43:27.292Z

Reserved: 2026-08-25T14:59:32.746Z

Link: CVE-2026-79917

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-09-21T21:17:12.623

Modified: 2026-09-21T21:17:12.740

Link: CVE-2026-79917

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses