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CVE-2026-10566— FoundationAgents MetaGPT schema.py Message.check_instruct_content deserialization

Quick assessment

Affected
FoundationAgents MetaGPT
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MetaGPT是MetaGPT公司的一个多代理框架。 MetaGPT 0.8.2及之前版本存在代码问题漏洞，该漏洞源于文件metagpt/schema.py的Message.check_instruct_content函数问题，可能导致反序列化。

CVSS 5.3 · Medium EPSS 0.12% · P2

Affected Version Matrix 3

VendorProduct Version RangeStatus
FoundationAgents MetaGPT 0.8.0 affected
0.8.1 affected
0.8.2 affected
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I. Basic Information for CVE-2026-10566

Vulnerability Information
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Vulnerability Title
FoundationAgents MetaGPT schema.py Message.check_instruct_content deserialization
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
MetaGPT 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MetaGPT是MetaGPT公司的一个多代理框架。 MetaGPT 0.8.2及之前版本存在代码问题漏洞，该漏洞源于文件metagpt/schema.py的Message.check_instruct_content函数问题，可能导致反序列化。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FoundationAgents MetaGPT 0.8.0 cpe:2.3:a:foundationagents:metagpt:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-10566

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III. Intelligence Information for CVE-2026-10566

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Proof of Concept for CVE-2026-10566 (1)

IV. Related Vulnerabilities

Same product: MetaGPT
Same vendor: FoundationAgents
Same weakness: CWE-502

V. Comments for CVE-2026-10566

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