CVE-2026-10566mediumCWE-20CWE-502

CVE-2026-10566: medium-severity vulnerability in FoundationAgents MetaGPT

FoundationAgents MetaGPT schema.py Message.check_instruct_content deserialization

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33Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 4.8epss 0.1%
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.
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
Affected products
FoundationAgents · MetaGPT
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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