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CVE-2026-111707 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CNA: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://hackmd.io/@hieuPenguinnn/99ai-chatlog-unauth-export-and-idor	CISA-ADP	ExploitTechnical Analysis
https://github.com/vastxie/99AI	[email protected]	ProductSource CodeVendor
https://github.com/vastxie/99AI/blob/v4.3.0/service/src/common/auth/jwtAuth.guard.ts	[email protected]	Source CodeVendor
https://github.com/vastxie/99AI/blob/v4.3.0/service/src/modules/chatLog/chatLog.service.ts#L463-L475	[email protected]	Source CodeVendor
https://hackmd.io/@hieuPenguinnn/99ai-chatlog-unauth-export-and-idor	[email protected]	ExploitTechnical Analysis
https://www.vulncheck.com/advisories/99ai-through-4.3.0-idor-via-api-chatlog-querysinglechat-chat-message-disclosure	[email protected]	AdvisoryBundle

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-639	Authorization Bypass Through User-Controlled Key	[email protected]

Affected Products

Product	Versions
99AI	<= 4.3.0 (semver)
CPE No CPEs found in CPE dictionary for this product. Remediation Workaround:low effort Restrict access to the export functionality so that only admin and super roles can export chat logs. Workaround:low effort Implement an owner check for the querySingleChat endpoint to ensure users can only read their own messages.

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]