What is CVE-2026-40156?

CVE-2026-40156 is a high-severity vulnerability in Mervinpraison Praisonai, classified under Code Injection. CVSS score: 7.8/10. Published 2026-04-10.

How severe is CVE-2026-40156?

High severity. CVSS v3 base score is 7.8 out of 10.

RCE in Mervinpraison Praisonai

CVE-2026-40156

PraisonAI is a multi-agent teams system. Prior to 4.5.128, PraisonAI automatically loads a file named tools.py from the current working directory to discover and register custom agent tools. This loading process uses importlib.util.spec_fr…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.000 (8.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Mervinpraison Praisonai — versions < 4.5.128

Weakness classification (CWE)

References

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2g3w-cpc4-chr4 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-40156?: CVE-2026-40156 is a high-severity vulnerability in Mervinpraison Praisonai, classified under Code Injection. CVSS score: 7.8/10. Published 2026-04-10.
How severe is CVE-2026-40156?: High severity. CVSS v3 base score is 7.8 out of 10.