CVE-2026-5971 FoundationAgents MetaGPT XML action_node.py ActionNode.xml_fill eval injection
Remote attackers can execute arbitrary code via improper neutralization in the XML action handler of the MetaGPT library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-5971?
CVE-2026-5971 is a medium-severity code injection vulnerability in FoundationAgents MetaGPT, published on 9 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw has been found in FoundationAgents MetaGPT up to 0.8.1. This vulnerability affects the function ActionNode.xml_fill of the file metagpt/actions/action_node.py of the component XML Handler. Executing a manipulation can lead to improper neutralization of directives in dynamically evaluated code. The attack may be launched remotely. The exploit has been published and may be used. The project was informed of the problem early through a pull request but has not reacted yet.
Which versions are affected by CVE-2026-5971?
3 open source packages ship an affected version, including metagpt. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
metagpt PyPI | All versions to 0.8.1 | None |
metagpt PyPI | All versions to 0.8.1 | None |
metagpt PyPI | All versions to 0.8.1 | None |
Products include Deepwisdom Metagpt.
How do I fix CVE-2026-5971?
No fix has been published for CVE-2026-5971 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-5971 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5971 exists.
Other vulnerabilities in FoundationAgents MetaGPT
- CVE-2026-0760 Foundation Agents MetaGPT deserialize_message Deserialization of Untrusted Data Remote Code Execution Vulnerability
- CVE-2026-0761 Foundation Agents MetaGPT actionoutput_str_to_mapping Code Injection Remote Code Execution Vulnerability
- CVE-2024-23750 Code execution in metagpt
- CVE-2026-6110 FoundationAgents MetaGPT Tree-of-Thought Solver tot.py generate_thoughts code injection
- CVE-2026-5970 FoundationAgents MetaGPT HumanEvalBenchmark/MBPPBenchmark check_solution code injection
Sources
Also known as GHSA-3ghp-8r47-4gj4, PYSEC-2026-2638.