CVE-2026-59705Public exploitNetwork attack vectorHinoki check available

Unauthenticated memory disclosure and modification via unprotected routers

Published Jul 7, 2026 · Updated Sep 24, 2026

Missing authentication in Mem0 OpenMemory API a3154d5 allows remote attackers to read, write, and delete arbitrary user memories. The application registers its memory routers without authentication middleware, while handlers trust caller-supplied user identifiers or fetch records directly by UUID. Any network client that can reach the self-hosted API can expose or alter private memory content, and the unauthenticated global-pause action can interrupt service for every user.

CVSS severity9.3
Critical
EPSS probability0.80%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing authentication in Mem0 OpenMemory API a3154d5 allows remote attackers to read, write, and delete arbitrary user memories. The application registers its memory routers without authentication middleware, while handlers trust caller-supplied user identifiers or fetch records directly by UUID. Any network client that can reach the self-hosted API can expose or alter private memory content, and the unauthenticated global-pause action can interrupt service for every user.

The record

CVE
CVE-2026-59705
Published
Jul 7, 2026
Updated
Sep 24, 2026
Vendor
Mem0
Product
Mem0
Classifications
CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <a3154d5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mem0 · Mem0version=0 <a3154d5

Published CVSS scores

9.8VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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