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VulnerabilityPublished

CVE-2026-0760: Foundation Agents MetaGPT · Deserialization of Untrusted Data

Affects Foundation Agents MetaGPTSource CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 3.0 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.4% chance of exploitation in 30 days – higher than 72% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Foundation AgentsMetaGPTAffected
  • =0.8.1
Fixed in–
npmmetagptpkg:npm/metagptOther threatsAffected
  • =0.8.1
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

  1. Immediately restrict network access to MetaGPT services, limiting exposure to trusted internal networks only.
  2. Implement strict input validation and sanitization on all data fed into the deserialize_message function to prevent malicious payloads.
  3. Monitor network traffic and logs for unusual deserialization activity or unexpected serialized data patterns.
  4. Employ application-layer firewalls or intrusion prevention systems capable of detecting and blocking deserialization attacks.
  5. Isolate MetaGPT instances in segmented network zones to contain potential breaches.
  6. Prepare for rapid patch deployment once an official fix is released by Foundation Agents.
  7. Conduct thorough security assessments and penetration testing focusing on deserialization vulnerabilities in AI frameworks.
  8. Educate development and security teams about secure deserialization practices and the risks of untrusted data processing.
  9. Use runtime application self-protection (RASP) tools to detect and prevent exploitation attempts in real time.
  10. Maintain up-to-date backups and incident response plans tailored to AI service compromises.

Description

CVE-2026-0760 is a critical remote code execution vulnerability in Foundation Agents MetaGPT version 0.8.1. It arises from improper validation during deserialization of untrusted data in the deserialize_message function, allowing attackers to execute arbitrary code without authentication or user interaction. The vulnerability impacts confidentiality, integrity, and availability, with a CVSS score of 9.8. Exploitation occurs remotely and requires no privileges, making it highly dangerous. Although no known exploits are currently in the wild, the flaw poses a significant risk to affected systems. European organizations using MetaGPT 0.8.

References

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