CVE-2026-111706
CVE-2026-111706 · 99AI through 4.3.0 Unauthenticated Information Disclosure via chatLog exportExcel
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 8.7 · High · EPSS 0.3%
- Published
- Updated
Affected products and versions
99ai
- Versions
- ≥ 0, ≤ 4.3.0: Affected (custom)
No fix published
Original sources
- https://hackmd.io/@hieuPenguinnn/99ai-chatlog-unauth-export-and-idor
- https://github.com/vastxie/99AI/blob/v4.3.0/service/src/modules/chatLog/chatLog.controller.ts#L47-L52
- https://github.com/vastxie/99AI/blob/v4.3.0/service/src/modules/chatLog/chatLog.service.ts#L104-L155
- https://github.com/vastxie/99AI
- https://www.vulncheck.com/advisories/99ai-through-4.3.0-unauthenticated-information-disclosure-via-chatlog-exportexcel
- https://nvd.nist.gov/vuln/detail/CVE-2026-111706