CVE-2026-4515Public exploitNetwork attack vector

Authenticated Python code execution via generated-code exec

Published Mar 21, 2026 · Updated Mar 21, 2026

Code injection in Foundation Agents MetaGPT 0.8.0 and 0.8.1 allows remote authenticated users to execute Python code via crafted input. Programmer.code_generate folds attacker-controlled problem, analysis, and feedback text into an LLM prompt, and exec_code executes the returned code with Python exec after only an import-name blocklist. Access to an AFlow workflow that accepts these inputs is required; execution is limited to the MetaGPT process's operating-system privileges.

CVSS severity6.3
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Foundation Agents MetaGPT 0.8.0 and 0.8.1 allows remote authenticated users to execute Python code via crafted input. Programmer.code_generate folds attacker-controlled problem, analysis, and feedback text into an LLM prompt, and exec_code executes the returned code with Python exec after only an import-name blocklist. Access to an AFlow workflow that accepts these inputs is required; execution is limited to the MetaGPT process's operating-system privileges.

The record

CVE
CVE-2026-4515
Published
Mar 21, 2026
Updated
Mar 21, 2026
Vendor
Foundation Agents
Product
MetaGPT
Classifications
CWE-94, CWE-74, T1059.006
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.8.0
  2. Affected versionversion=0.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Foundation Agents · MetaGPTversion=0.8.0; version=0.8.1

Published CVSS scores

2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059.006Command and Scripting Interpreter: Python

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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