PYSEC-2026-2637 FoundationAgents MetaGPT: Deserialization through flawed argument mapping via Message.check_instruct_content()

A weakness has been identified in FoundationAgents MetaGPT up to 0.8.2. This affects the function Message.checkinstructcontent 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...

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

A weakness has been identified in FoundationAgents MetaGPT up to 0.8.2. This affects the function Message.checkinstructcontent 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...

CVE-2026-10566

FoundationAgents MetaGPT (up to 0.8.2) contains a deserialization vulnerability in metagpt/schema.py: Message.check_instruct_content. By manipulating the argument mapping, an attacker can trigger deserialization with local access. An exploit has been publicly released; the project was informed vi...