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Critical · 9.1 CVE-2026-34953 EUVD-2026-18925GHSA-98f9-fqg5-hvq5PYSEC-2026-468

PraisonAI: Authentication Bypass in OAuthManager.validate_token()

Published Apr 3, 2026 · Updated Apr 6, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
MervinPraison PraisonAI < 4.5.97 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI praisonai < 4.5.97 4.5.97 GHSA-98f9-fqg5-hvq5

References