CVE-2026-10566

MEDIUM

FoundationAgents MetaGPT schema.py Message.check_instruct_content deserialization

Title source: cna
STIX 2.1

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.

References (6)

Core 6
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-367673 | FoundationAgents MetaGPT schema.py Message.check_instruct_content deserialization
https://vuldb.com/vuln/367673
Signature, Permissions Required signature permissions-required
VDB-367673 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/367673/cti
Third Party Advisory third-party-advisory
CVE-2026-10566 | CVE Analysis and Report
https://vuldb.com/cve/CVE-2026-10566
Third Party Advisory third-party-advisory
Submit #828301 | FoundationAgents MetaGPT 0.8.2 Deserialization
https://vuldb.com/submit/828301

Scores

CVSS v3 5.3
EPSS 0.0012
EPSS Percentile 2.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-20 CWE-502
Status published
Products (3)
FoundationAgents/MetaGPT 0.8.0
FoundationAgents/MetaGPT 0.8.1
FoundationAgents/MetaGPT 0.8.2
Published Jun 02, 2026
Tracked Since Jun 02, 2026