{"id":"CVE-2026-116575","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-116575","generatedAt":"2026-10-27T23:59:23.768Z","title":"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.","description":"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.","published":"2026-10-26T21:18:13.000Z","lastModified":"2026-10-27T16:04:23.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-200","CWE-863"],"affected":[],"epss":null,"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and no EPSS score yet. Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-26T21:18:13.000Z","detail":{"score":"6.3","severity":"MEDIUM","publishedAt":"2026-10-26T21:18:13.360Z"},"summary":"New CVE, medium severity (CVSS 6.3)."}],"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"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-116575","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}