CVE-2026-111702

ChatOllama through commit 96c3ce5 contains an insecure direct object reference vulnerability that allows remote attackers to access other users' private knowledge bases by supplying sequential ids. Attackers can enumerate ids via GET /api/knowledgebases/{id} or the knowledgebaseId parameter of POST /api/models/chat to read metadata and retrieved document content.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/sugarforever/chat-ollama/blob/6f4245a96b58ce8833a8c51d90d923b0e9814784/server/api/knowledgebases/%5Bid%5D.get.ts#L25-L34
https://github.com/sugarforever/chat-ollama/blob/6f4245a96b58ce8833a8c51d90d923b0e9814784/server/api/models/chat/index.post.ts#L392-L427
https://hackmd.io/@hieuPenguinnn/chat-ollama-knowledge-base-cross-user-idor
https://www.vulncheck.com/advisories/chatollama-through-commit-96c3ce5-idor-exposes-private-knowledge-bases
https://hackmd.io/@hieuPenguinnn/chat-ollama-knowledge-base-cross-user-idor

Configurations

No configuration.

History

16 Oct 2026, 19:17

Type	Values Removed	Values Added
References	~~() https://hackmd.io/@hieuPenguinnn/chat-ollama-knowledge-base-cross-user-idor -~~	() https://hackmd.io/@hieuPenguinnn/chat-ollama-knowledge-base-cross-user-idor -

16 Oct 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-16 18:17

Updated : 2026-10-16 19:17

NVD link : CVE-2026-111702

Mitre link : CVE-2026-111702

CVE.ORG link : CVE-2026-111702

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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