CVE-2026-111707
MEDIUM
CVSS 5.3
Published: 2026-10-16
Modified: 2026-10-16
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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.
Quick Facts
| CVE ID | CVE-2026-111707 |
| CVSS Score | 5.3 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| Published | 2026-10-16 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/vastxie/99AI
- https://github.com/vastxie/99AI/blob/v4.3.0/service/src/comm…
- https://github.com/vastxie/99AI/blob/v4.3.0/service/src/modu…
- https://hackmd.io/@hieuPenguinnn/99ai-chatlog-unauth-export-…
- https://www.vulncheck.com/advisories/99ai-through-4.3.0-idor…
- https://hackmd.io/@hieuPenguinnn/99ai-chatlog-unauth-export-…