{"id":"CVE-2026-111707","revision":"a1c1653351224b0a955261bd219e1858","records":[{"revision":"a1c1653351224b0a955261bd219e1858","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-111707","aliases":[],"title":"99AI through 4.3.0 IDOR via /api/chatLog/querySingleChat Chat Message Disclosure","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.","state":0,"publishedAt":"2026-10-16T17:39:58.546+00:00","modifiedAt":"2026-10-16T18:20:01.823+00:00","affected":[{"ecosystem":"Vendor product","name":"99AI","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"vastxie\",\n                    \"product\": \"99AI\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"4.3.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:github/vastxie/99AI\",\n                    \"repo\": \"https://github.com/vastxie/99AI\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","score":6.9,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://hackmd.io/@hieuPenguinnn/99ai-chatlog-unauth-export-and-idor","https://github.com/vastxie/99AI/blob/v4.3.0/service/src/modules/chatLog/chatLog.service.ts#L463-L475","https://github.com/vastxie/99AI/blob/v4.3.0/service/src/common/auth/jwtAuth.guard.ts","https://github.com/vastxie/99AI","https://www.vulncheck.com/advisories/99ai-through-4.3.0-idor-via-api-chatlog-querysinglechat-chat-message-disclosure"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111707","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-111707","identifiers":["CVE-2026-111707"]},"retained":false,"historicalAffected":[]}],"coverage":[]}