CVE-2026-77525

4.2 MEDIUMpublic exploit available

Published 2026-09-21 · Updated 2026-09-24

AI risk analysis

Summary: The flaw allows a normal user to read victim chat records by misusing application_id and chat_id values, posing a risk to data privacy within the same workspace.
Exploitability: Exploitation requires knowledge of specific chat_ids and involves reassigning them to different applications; moderately difficult with preconditions.
Blast radius: If exploited, it could lead to significant data exposure for victims within the same workspace, impacting multiple users' privacy.
Prioritized remediation: Implement strict validation checks on application_id and chat_id values to ensure they match before loading records.

data-exposuremisconfigurationworkspace-privacy

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Weaknesses

CWE-862

Public exploit & PoC references

References

Data: NVD (public domain). Analysis: local $0 model. Defensive use only.