{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-111707", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-16T14:31:22.682Z", "datePublished": "2026-10-16T17:39:58.546Z", "dateUpdated": "2026-10-16T18:20:01.823Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-16T17:39:58.546Z" }, "datePublic": "2026-10-16T00:00:00.000Z", "title": "99AI through 4.3.0 IDOR via /api/chatLog/querySingleChat Chat Message Disclosure", "descriptions": [ { "lang": "en", "value": "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." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Authorization Bypass Through User-Controlled Key", "cweId": "CWE-639", "type": "CWE" } ] } ], "affected": [ { "vendor": "vastxie", "product": "99AI", "defaultStatus": "unaffected", "versions": [ { "version": "0", "lessThanOrEqual": "4.3.0", "status": "affected", "versionType": "custom" } ], "packageURL": "pkg:github/vastxie/99AI", "repo": "https://github.com/vastxie/99AI" } ], "metrics": [ { "format": "CVSS", "cvssV4_0": { "version": "4.0", "vectorString": "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", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM" } }, { "format": "CVSS", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM" } } ], "references": [ { "url": "https://hackmd.io/@hieuPenguinnn/99ai-chatlog-unauth-export-and-idor", "tags": [ "third-party-advisory" ] }, { "url": "https://github.com/vastxie/99AI/blob/v4.3.0/service/src/modules/chatLog/chatLog.service.ts#L463-L475", "tags": [ "technical-description" ] }, { "url": "https://github.com/vastxie/99AI/blob/v4.3.0/service/src/common/auth/jwtAuth.guard.ts", "tags": [ "technical-description" ] }, { "url": "https://github.com/vastxie/99AI", "tags": [ "product" ] }, { "name": "VulnCheck Advisory: 99AI through 4.3.0 IDOR via /api/chatLog/querySingleChat Chat Message Disclosure", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/99ai-through-4.3.0-idor-via-api-chatlog-querysinglechat-chat-message-disclosure" } ], "credits": [ { "lang": "en", "value": "hieuPenguinnn", "type": "finder" } ], "x_generator": { "engine": "vulncheck-endgame" } }, "adp": [ { "references": [ { "url": "https://hackmd.io/@hieuPenguinnn/99ai-chatlog-unauth-export-and-idor", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-10-16T18:19:32.858688Z", "id": "CVE-2026-111707", "options": [ { "Exploitation": "poc" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T18:20:01.823Z" } } ] } }