CVE-2026-111706 Details
Description
99AI through 4.3.0 contains a missing authentication vulnerability in the POST /api/chatLog/exportExcel route that allows unauthenticated attackers to export all users' chat logs. Attackers can send requests with controlled page, size, and optional email fields to download xlsx files containing usernames, emails, prompts, and AI answers.
A missing authentication vulnerability has been identified in the 99AI application, specifically in versions through 4.3.0. The issue resides in the POST /api/chatLog/exportExcel route, which lacks proper authentication controls. This vulnerability enables unauthenticated attackers to export chat logs from all users. The exported data, delivered in Excel format, includes usernames, email addresses, prompts, and AI-generated responses. Attackers can manipulate request parameters to download chat logs from specific users or export all logs in bulk.
The exportExcel route should be guarded with authentication to ensure that only authorized users can access it. Additionally, a global authentication guard should be implemented to protect all routes by default, with exceptions made for explicitly public ones.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 16, 2026CISA-ADP
Assessed Oct 16, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-306 | Missing Authentication for Critical Function | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| 99AI | <= 4.3.0 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 16, 2026 | CVE Modified | CISA-ADP |
| Oct 16, 2026 | New CVE Received | [email protected] |