A weakness has been identified in FoundationAgents MetaGPT up to 0.8.2. This affects the function Message.check_instruct_content of the file metagpt/schema.py. Executing a manipulation of the argument mapping can lead to deserialization. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Local

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Foundation Agents
  • Metagpt
Foundationagents
  • Metagpt

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References
Link Providers
https://github.com/FoundationAgents/MetaGPT/ cve-icon cve-icon
https://github.com/FoundationAgents/MetaGPT/issues/2038 cve-icon cve-icon
https://vuldb.com/cve/CVE-2026-10566 cve-icon cve-icon
https://vuldb.com/submit/828301 cve-icon cve-icon
https://vuldb.com/vuln/367673 cve-icon cve-icon
https://vuldb.com/vuln/367673/cti cve-icon cve-icon
History

Tue, 02 Jun 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 02 Jun 2026 04:15:00 +0000

Type Values Removed Values Added
First Time appeared Foundation Agents
Foundation Agents metagpt
Vendors & Products Foundation Agents
Foundation Agents metagpt

Tue, 02 Jun 2026 02:30:00 +0000

Type Values Removed Values Added
Description A weakness has been identified in FoundationAgents MetaGPT up to 0.8.2. This affects the function Message.check_instruct_content of the file metagpt/schema.py. Executing a manipulation of the argument mapping can lead to deserialization. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Title FoundationAgents MetaGPT schema.py Message.check_instruct_content deserialization
First Time appeared Foundationagents
Foundationagents metagpt
Weaknesses CWE-20
CWE-502
CPEs cpe:2.3:a:foundationagents:metagpt:*:*:*:*:*:*:*:*
Vendors & Products Foundationagents
Foundationagents metagpt
References
Metrics cvssV2_0

{'score': 4.3, 'vector': 'AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 5.3, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2026-06-02T01:45:10.323Z

Updated: 2026-06-02T12:24:18.920Z

Reserved: 2026-06-01T16:34:26.724Z

Link: CVE-2026-10566

cve-icon Vulnrichment

Updated: 2026-06-02T12:24:14.923Z

cve-icon NVD

Status : Deferred

Published: 2026-06-02T03:16:16.210

Modified: 2026-06-02T13:03:31.153

Link: CVE-2026-10566

cve-icon Redhat

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