PT-2026-45684 · Foundation Agents · Metagpt

Asuka39 · CVE-2026-10566 · Published 2026-06-02 · Updated 2026-07-13

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions FoundationAgents MetaGPT versions prior to 0.8.3

Description A weakness exists in the Message.check instruct content() function within the metagpt/schema.py file. Manipulation of the mapping argument can lead to deserialization, which is the process of converting a data stream back into an object. This issue is restricted to local execution.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Deserialization of Untrusted Data

Weakness Enumeration

CWE-20

CWE-502

Related Identifiers

CVE-2026-10566

GHSA-3C3G-7HWG-9QMR

PYSEC-2026-2637

Affected Products

Metagpt

References · 14

• 🔥 https://github.com/FoundationAgents/MetaGPT/issues/2038 · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10566.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-10566 · Security Note
• https://osv.dev/vulnerability/CVE-2026-10566 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-3c3g-7hwg-9qmr · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2026-2637 · Vendor Advisory
• https://github.com/FoundationAgents/MetaGPT · Note
• https://vuldb.com/vuln/367673/cti · Note
• https://github.com/advisories/GHSA-3c3g-7hwg-9qmr · Note
• https://pypi.org/project/metagpt · Note
• https://vuldb.com/vuln/367673 · Note
• https://vuldb.com/cve/CVE-2026-10566 · Note
• https://vuldb.com/submit/828301 · Note
• https://t.me/CVEtracker/55555 · Telegram Post