What is CVE-2026-39307?

CVE-2026-39307 is a high-severity vulnerability in Mervinpraison Praisonai, classified under Path Traversal. CVSS score: 8.1/10. Published 2026-04-07.

How severe is CVE-2026-39307?

High severity. CVSS v3 base score is 8.1 out of 10.

Path Traversal in Mervinpraison Praisonai

CVE-2026-39307

PraisonAI is a multi-agent teams system. Prior to 1.5.113, The PraisonAI templates installation feature is vulnerable to a "Zip Slip" Arbitrary File Write attack. When downloading and extracting template archives from external sources (e.g., GitHub), the application uses Python's zipfile.extractall() without verifying if the files within the archive resolve outside of the intended extraction directory. This vulnerability is fixed in 1.5.113.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.003 (23.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H.

Affected products

Mervinpraison Praisonai — versions < 4.5.113
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-2026-39307?: CVE-2026-39307 is a high-severity vulnerability in Mervinpraison Praisonai, classified under Path Traversal. CVSS score: 8.1/10. Published 2026-04-07.
How severe is CVE-2026-39307?: High severity. CVSS v3 base score is 8.1 out of 10.