{"id":"CVE-2026-116575","sourceIdentifier":"security-advisories@github.com","published":"2026-10-26T21:18:13.360","lastModified":"2026-10-27T16:04:22.707","vulnStatus":"Deferred","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":"security-advisories@github.com","affectedData":[{"vendor":"mem0ai","product":"mem0","versions":[{"version":"< 2.0.18","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","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}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-27T13:45:14.377647Z","id":"CVE-2026-116575","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-200"},{"lang":"en","value":"CWE-863"}]}],"references":[{"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","source":"security-advisories@github.com"}]}