CVE-2026-116575
Published:October 26, 2026
Updated:October 29, 2026
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 Packages
https://github.com/mem0ai/mem0.git (GITHUB):
Affected version(s) >=ts-v3.0.0 <ts-v3.1.6Fix Suggestion:
Update to version ts-v3.1.6https://github.com/mem0ai/mem0.git (GITHUB):
Affected version(s) >=v2.0.0 <v2.0.18Fix Suggestion:
Update to version v2.0.18mem0ai (NPM):
Affected version(s) >=3.0.0 <3.1.6Fix Suggestion:
Update to version 3.1.6mem0ai (NPM):
Affected version(s) >=1.0.0 <3.1.6Fix Suggestion:
Update to version 3.1.6mem0ai (PYTHON):
Affected version(s) >=0.0.1 <2.0.18Fix Suggestion:
Update to version 2.0.18mem0ai (PYTHON):
Affected version(s) >=2.0.0 <2.0.18Fix Suggestion:
Update to version 2.0.18Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.2
Attack Vector
LOCAL
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
EPSS
Base Score:
0.11