23 Oct 2026 15:48:27 UTC
MaxKB: Homepage ranking leaks application IDs that workflow application-nodes can use to invoke another user's application
cve-program · CVE-2026-77520 · Published
CVE-2026-77520
MaxKB · Vulnerability
CVSS 3.1 5.4 MEDIUMCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-77520
PublishedMaxKB is an open-source AI assistant for enterprise. In 2.10.2-lts and earlier, a normal user in the same workspace can obtain another user's application_id from the homepage application question-ranking endpoint when the published victim application has ranking activity in the selected date range and the attacker knows or guesses its name, even though direct application detail and debug-open routes deny access. An attacker who can create and publish a workflow application can place the disclosed identifier in an attacker-owned workflow application-node, trigger that workflow, receive output generated by the victim application, and create durable application_chat and application_chat_record rows under the victim application because save and runtime paths do not verify permission to use the referenced application. No fixed version is available as of this review.
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