What is CVE-2026-57148?

CVE-2026-57148 is a critical-severity vulnerability in Mervinpraison Praisonai, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-09-15.

How severe is CVE-2026-57148?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Mervinpraison Praisonai

CVE-2026-57148

PraisonAI is a multi-agent teams system. Prior to 0.1.6, praisonai_platform/services/auth_service.py falls back to the public dev-secret-change-me HS256 signing key when PLATFORM_JWT_SECRET is unset, while the startup and token-issuance guards are disabled because PLATFORM_ENV also defaults to dev. An unauthenticated attacker can sign a JWT containing an attacker-chosen sub value, and AuthService._verify_token() accepts it as an authenticated identity, enabling user or workspace-owner impersonation when a target identifier is known. This vulnerability is fixed in praisonai-platform 0.1.6.

Vulnerability class: Broken Authentication

Published 2026-09-15 · last modified 2026-09-16.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (50.7th percentile), scored 2026-10-31.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Mervinpraison Praisonai — versions < 4.6.51
Mervinpraison Praisonai-Platform — versions < 0.1.6

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-57148?: CVE-2026-57148 is a critical-severity vulnerability in Mervinpraison Praisonai, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-09-15.
How severe is CVE-2026-57148?: Critical severity. CVSS v3 base score is 9.8 out of 10.