CVE-2026-0760Network attack vector

Unauthenticated code execution via unsafe message deserialization

Published Jan 23, 2026 · Updated Jan 23, 2026

Deserialization of untrusted data in MetaGPT 0.8.1 allows remote attackers to execute arbitrary code through crafted messages. The deserialize_message function passes user-supplied serialized data into deserialization without proper validation. No authentication or user interaction is required, and successful exploitation runs code with the service account's privileges.

CVSS severity9.8
Critical
EPSS probability1.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization of untrusted data in MetaGPT 0.8.1 allows remote attackers to execute arbitrary code through crafted messages. The deserialize_message function passes user-supplied serialized data into deserialization without proper validation. No authentication or user interaction is required, and successful exploitation runs code with the service account's privileges.

The record

CVE
CVE-2026-0760
Published
Jan 23, 2026
Updated
Jan 23, 2026
Vendor
Foundation Agents
Product
MetaGPT
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 23, 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=0.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Foundation Agents · MetaGPTversion=0.8.1

Published CVSS scores

9.8Zero Day InitiativeCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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