CVE-2026-116575

{
  "id": "CVE-2026-116575",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-26T21:18:13.360",
  "lastModified": "2026-10-26T21:18:13.360",
  "vulnStatus": "Received",
  "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."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "mem0ai",
          "product": "mem0",
          "versions": [
            {
              "version": "< 2.0.18",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
          "baseScore": 6.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.2
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        },
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/mem0ai/mem0/commit/71f2ebefa3494da21550fb525216818776cde67f",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/mem0ai/mem0/pull/6892",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/mem0ai/mem0/releases/tag/ts-v3.1.6",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/mem0ai/mem0/releases/tag/v2.0.18",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/mem0ai/mem0/security/advisories/GHSA-5324-3w58-qpp2",
      "source": "[email protected]"
    }
  ]
}