CVE-2026-11170699AI through 4.3.0 Unauthenticated Information Disclosure via chatLog exportExcel
Updated under an hour ago ()
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It affects vastxie 99AI. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-306
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 16, 2026
Affected products
vastxie 99AI vastxie:99ai (from the name) | through 4.3.0 | CNA record |
References
- https://hackmd.io/@hieuPenguinnn/99ai-chatlog-unauth-export-and-idorthird-party-advisory
- https://github.com/vastxie/99AI/blob/v4.3.0/service/src/modules/chatLog/chatLog.controller.ts#L47-L52technical-description
- https://github.com/vastxie/99AI/blob/v4.3.0/service/src/modules/chatLog/chatLog.service.ts#L104-L155technical-description
- https://github.com/vastxie/99AIproduct
- https://www.vulncheck.com/advisories/99ai-through-4.3.0-unauthenticated-information-disclosure-via-chatlog-exportexcelthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.