CVE-2026-34953

Name: CVE-2026-34953
Creator: NVD / NIST
Published: 2026-04-03T23:17:06.653+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2026-34953 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

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 Bearer token is treated as authenticated, granting full access to all registered tools and agent capabilities. This issue has been patched in version 4.5.97.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

0.38%

29.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Praison	Praisonai	< 4.5.97

References

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-98f9-fqg5-hvq5Exploit, Vendor Advisory
https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-98f9-fqg5-hvq5Exploit, Vendor Advisory

Timeline

Published: Apr 3, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-34953?

How severe is CVE-2026-34953?

CVE-2026-34953 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2026-34953?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-34953?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST