{
    "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": "2026-10-27T14:18:25.039Z"
    },
    "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"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-27T13:45:14.377647Z",
                                "id": "CVE-2026-116575",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-27T14:18:25.039Z"
                }
            }
        ]
    }
}