{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-116575", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-26T15:03:39.035Z", "datePublished": "2026-10-26T20:15:01.875Z", "dateUpdated": "2026-10-26T20:15:01.875Z"}, "containers": {"cna": {"title": "Mem0: Cross-tenant conversation leak via unescaped delimiter collision in session-scope key (_build_session_scope)", "problemTypes": [{"descriptions": [{"cweId": "CWE-200", "lang": "en", "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-863", "lang": "en", "description": "CWE-863: Incorrect Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/mem0ai/mem0/security/advisories/GHSA-5324-3w58-qpp2", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/mem0ai/mem0/security/advisories/GHSA-5324-3w58-qpp2"}, {"name": "https://github.com/mem0ai/mem0/pull/6892", "tags": ["x_refsource_MISC"], "url": "https://github.com/mem0ai/mem0/pull/6892"}, {"name": "https://github.com/mem0ai/mem0/commit/71f2ebefa3494da21550fb525216818776cde67f", "tags": ["x_refsource_MISC"], "url": "https://github.com/mem0ai/mem0/commit/71f2ebefa3494da21550fb525216818776cde67f"}, {"name": "https://github.com/mem0ai/mem0/releases/tag/ts-v3.1.6", "tags": ["x_refsource_MISC"], "url": "https://github.com/mem0ai/mem0/releases/tag/ts-v3.1.6"}, {"name": "https://github.com/mem0ai/mem0/releases/tag/v2.0.18", "tags": ["x_refsource_MISC"], "url": "https://github.com/mem0ai/mem0/releases/tag/v2.0.18"}], "affected": [{"vendor": "mem0ai", "product": "mem0", "versions": [{"version": "< 2.0.18", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-26T20:15:01.875Z"}, "descriptions": [{"lang": "en", "value": "Mem0 provides persistent memory infrastructure for AI agents and applications. Prior to Python SDK 2.0.18 and TypeScript SDK 3.1.6, _build_session_scope() in mem0/memory/main.py and Memory.buildSessionScope() in the TypeScript SDK join caller-controlled user_id, agent_id, and run_id values using unescaped & and = delimiters. A caller can embed another scope component in a controlled identifier so that distinct tenant tuples produce the same session_scope key. Memory.add(), AsyncMemory.add(), and the REST POST /memories flow use that key to read and save recent raw messages, allowing cross-tenant conversation disclosure and eviction or interleaving of another tenant's history. This issue is fixed in Python SDK 2.0.18 and TypeScript SDK 3.1.6."}], "source": {"advisory": "GHSA-5324-3w58-qpp2", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "mem0", "vendor": "mem0ai", "versions": [{"status": "affected", "version": "< 2.0.18"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Mem0 provides persistent memory infrastructure for AI agents and applications. Prior to Python SDK 2.0.18 and TypeScript SDK 3.1.6, _build_session_scope() in mem0/memory/main.py and Memory.buildSessionScope() in the TypeScript SDK join caller-controlled user_id, agent_id, and run_id values using unescaped & and = delimiters. A caller can embed another scope component in a controlled identifier so that distinct tenant tuples produce the same session_scope key. Memory.add(), AsyncMemory.add(), and the REST POST /memories flow use that key to read and save recent raw messages, allowing cross-tenant conversation disclosure and eviction or interleaving of another tenant's history. This issue is fixed in Python SDK 2.0.18 and TypeScript SDK 3.1.6."}], "id": "CVE-2026-116575", "lastModified": "2026-10-26T21:18:13.360", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-26T21:18:13.360", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/mem0ai/mem0/commit/71f2ebefa3494da21550fb525216818776cde67f"}, {"source": "security-advisories@github.com", "url": "https://github.com/mem0ai/mem0/pull/6892"}, {"source": "security-advisories@github.com", "url": "https://github.com/mem0ai/mem0/releases/tag/ts-v3.1.6"}, {"source": "security-advisories@github.com", "url": "https://github.com/mem0ai/mem0/releases/tag/v2.0.18"}, {"source": "security-advisories@github.com", "url": "https://github.com/mem0ai/mem0/security/advisories/GHSA-5324-3w58-qpp2"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}, {"lang": "en", "value": "CWE-863"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}