What is CVE-2026-40157?

CVE-2026-40157 is a high-severity vulnerability in Mervinpraison Praisonai, classified under Path Traversal. CVSS score: 8.8/10. Published 2026-04-10.

How severe is CVE-2026-40157?

High severity. CVSS v3 base score is 8.8 out of 10.

Path Traversal in Mervinpraison Praisonai

CVE-2026-40157

PraisonAI is a multi-agent teams system. Prior to 4.5.128, cmd_unpack in the recipe CLI extracts .praison tar archives using raw tar.extract() without validating archive member paths. A .praison bundle containing ../../ entries will write…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.004 (30.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Mervinpraison Praisonai — versions < 4.5.128
Praison Praisonai

Weakness classification (CWE)

CWE-22 — Path Traversal

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-40157?: CVE-2026-40157 is a high-severity vulnerability in Mervinpraison Praisonai, classified under Path Traversal. CVSS score: 8.8/10. Published 2026-04-10.
How severe is CVE-2026-40157?: High severity. CVSS v3 base score is 8.8 out of 10.