CVE-2026-111707

Medium

Description

99AI through 4.3.0 contains an insecure direct object reference vulnerability that allows unauthenticated attackers to read other users' chat messages because querySingleChat lacks an owner check. Attackers can send a fingerprint header to obtain a visitor JWT and iterate sequential chatId values to retrieve other users' message content and task data.

SeverityMedium

CVSS5.3

Exploit probability—

Product99AI

PublishedOct 16, 2026

First seenOct 16, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

Product	Affected versions	Fixed in
vastxie 99AI	v ≤ 4.3.0	—

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