CVE-2026-111702CWE-639

CVE-2026-111702

High · published October 16, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
35.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00426 · 35.8th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-10-16T22:17Z
References (5)
https://github.com/sugarforever/chat-ollama/blob/6f4245a96b58ce8833a8c51d90d923b0e9814784/server/api/knowledgebases/%5Bid%5D.get.ts#L25-L34 · [email protected]https://github.com/sugarforever/chat-ollama/blob/6f4245a96b58ce8833a8c51d90d923b0e9814784/server/api/models/chat/index.post.ts#L392-L427 · [email protected]https://hackmd.io/@hieuPenguinnn/chat-ollama-knowledge-base-cross-user-idor · [email protected]https://www.vulncheck.com/advisories/chatollama-through-commit-96c3ce5-idor-exposes-private-knowledge-bases · [email protected]https://hackmd.io/@hieuPenguinnn/chat-ollama-knowledge-base-cross-user-idor · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 18 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 16 OCT 17:39Z
    ChatOllama through commit 96c3ce5 IDOR Exposes Private Knowledge Bases
    cvelistv5
  • 16 OCT 17:39Z
    ChatOllama through commit 96c3ce5 IDOR Exposes Private Knowledge Bases
    cvelistv5