What is CVE-2026-40154?

CVE-2026-40154 is a critical-severity vulnerability in Mervinpraison Praisonai, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 9.3/10. Published 2026-04-09.

How severe is CVE-2026-40154?

Critical severity. CVSS v3 base score is 9.3 out of 10.

Vulnerability in Mervinpraison Praisonai

CVE-2026-40154

PraisonAI is a multi-agent teams system. Prior to 4.5.128, PraisonAI treats remotely fetched template files as trusted executable code without integrity verification, origin validation, or user confirmation, enabling supply chain attacks t…

EPSS: 0.001 (17.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N.

Affected products

Mervinpraison Praisonai — versions < 4.5.128

Weakness classification (CWE)

CWE-829 — Inclusion of Functionality from Untrusted Control Sphere

References

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-pv9q-275h-rh7x (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-40154?: CVE-2026-40154 is a critical-severity vulnerability in Mervinpraison Praisonai, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 9.3/10. Published 2026-04-09.
How severe is CVE-2026-40154?: Critical severity. CVSS v3 base score is 9.3 out of 10.