What is CVE-2026-34953?

CVE-2026-34953 is a critical-severity vulnerability in Mervinpraison Praisonai, classified under Incorrect Authorization. CVSS score: 9.1/10. Published 2026-04-03.

How severe is CVE-2026-34953?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Auth bypass in Mervinpraison Praisonai

CVE-2026-34953

PraisonAI is a multi-agent teams system. Prior to version 4.5.97, OAuthManager.validate_token() returns True for any token not found in its internal store, which is empty by default. Any HTTP request to the MCP server with an arbitrary Bea…

Vulnerability class: Broken Access Control

EPSS: 0.000 (5.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Mervinpraison Praisonai — versions < 4.5.97

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-98f9-fqg5-hvq5 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-34953?: CVE-2026-34953 is a critical-severity vulnerability in Mervinpraison Praisonai, classified under Incorrect Authorization. CVSS score: 9.1/10. Published 2026-04-03.
How severe is CVE-2026-34953?: Critical severity. CVSS v3 base score is 9.1 out of 10.