---
id: CVE-2026-31240
aliases:
  - GHSA-jfv9-68m5-gjjr
  - PYSEC-2026-2635
title: >-
  mem0 server lacks authentication and authorization controls for its memory
  management API endpoints
summary: >-
  mem0 server lacks authentication and authorization controls for its memory
  management API endpoints
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'
vendor: mem0ai
product: mem0ai
ecosystem: pip
affected:
  - mem0ai <= 1.0.0
published: '2026-05-12'
updated: '2026-07-13'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-jfv9-68m5-gjjr'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-31240'
  - url: 'https://github.com/mem0ai/mem0'
  - url: 'https://www.notion.so/CVE-2026-31240-35d1e13931888170964ae035c04a8f18'
tags:
  - osv
  - pip
epss: 0.0054
epssPercentile: 0.42938
ingestedAt: '2026-07-13T18:57:59.686Z'
---

## Overview

The mem0 1.0.0 server lacks authentication and authorization controls for its memory management API endpoints. Critical functions such as updating memory records (PUT /memories/{memory_id}) are exposed without any verification of the requester's identity or permissions. A remote attacker can exploit this by sending unauthenticated requests to modify, overwrite, or delete arbitrary memory records, leading to unauthorized data manipulation and potential data loss.

## Affected packages

- `mem0ai <= 1.0.0`

## Remediation

Refer to the advisory for the patched release.