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CVE-2026-29075— Mesa: Checking out of untrusted code in `benchmarks.yml` workflow may lead to code execution in privileged runner

Quick assessment

Affected
mesa mesa
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mesa是Mesa开源的一个代理建模框架。 Mesa 3.5.0及之前版本存在代码注入漏洞，该漏洞源于工作流中检出不受信任的代码，可能导致代码执行。

CVSS 8.3 · High EPSS 0.55% · P45

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-29075

Vulnerability Information
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Vulnerability Title
Mesa: Checking out of untrusted code in `benchmarks.yml` workflow may lead to code execution in privileged runner
Source: CVE Program / CVE List V5
Vulnerability Description
Mesa is an open-source Python library for agent-based modeling, simulating complex systems and exploring emergent behaviors. In version 3.5.0 and prior, checking out of untrusted code in benchmarks.yml workflow may lead to code execution in privileged runner. This issue has been patched via commit c35b8cd.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Mesa 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mesa是Mesa开源的一个代理建模框架。 Mesa 3.5.0及之前版本存在代码注入漏洞，该漏洞源于工作流中检出不受信任的代码，可能导致代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
mesa mesa <= 3.5.0 -

II. Public POCs for CVE-2026-29075

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 6073 chars
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III. Intelligence Information for CVE-2026-29075

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Patches & Fixes for CVE-2026-29075 (1)

Vendor Advisories for CVE-2026-29075 (1)

IV. Related Vulnerabilities

Same product: mesa
Same weakness: CWE-94