TI-2026-09088 Aliases CVE-2026-10566 GHSA-3c3g-7hwg-9qmr

FoundationAgents MetaGPT schema.py Message.check_instruct_content deserialization

MEDIUM 55CWE-20Published 2026-06-02 · Updated 2026-06-02

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: Low · Low · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-502.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00122 1st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
FoundationAgents	MetaGPT	0.8.0; 0.8.1; 0.8.2	—	No fix listed	CNA
—	metagpt (PyPI)	up to 0.8.2	—	No fix listed	GHSA-3c3g-7hwg-9qmr

MetaGPT VendorFoundationAgents Affected 0.8.0; 0.8.1; 0.8.2 Fixed in — No fix listed CNA
metagpt (PyPI) Vendor— Affected up to 0.8.2 Fixed in — No fix listed GHSA-3c3g-7hwg-9qmr

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:foundationagents:metagpt::::::::	—	—	—

cpe:2.3:a:foundationagents:metagpt:*:*:*:*:*:*:*:* Versions — — ·—

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-10566
2026-10-03 Alias added: GHSA-3c3g-7hwg-9qmr

References

Exploit 1

https://github.com/FoundationAgents/MetaGPT/issues/2038

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-10566

Other 2

TI-2024-15753 MetaGPT through 0.6.4 allows the QaEngineer role to execute arbitrary code because… CVSS 3.1HIGH 8.8
TI-2026-05354 FoundationAgents MetaGPT Tree-of-Thought Solver tot.py generate_thoughts code injection CVSS 4.0MEDIUM 6.9
TI-2026-05237 FoundationAgents MetaGPT terminal.py Bash.run os command injection CVSS 4.0MEDIUM 6.9
TI-2026-05236 FoundationAgents MetaGPT common.py get_mime_type os command injection CVSS 4.0MEDIUM 6.9
TI-2026-05235 FoundationAgents MetaGPT terminal.py Terminal.run_command os command injection CVSS 4.0MEDIUM 6.9
TI-2026-05234 FoundationAgents MetaGPT XML action_node.py ActionNode.xml_fill eval injection CVSS 4.0MEDIUM 6.9

See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences