CVE-2026-34953: PraisonAI Has Authentication Bypass via OAuthManager.validate_token()

April 1, 2026 (updated April 6, 2026)

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.

References

github.com/MervinPraison/PraisonAI
github.com/MervinPraison/PraisonAI/security/advisories/GHSA-98f9-fqg5-hvq5
github.com/advisories/GHSA-98f9-fqg5-hvq5
nvd.nist.gov/vuln/detail/CVE-2026-34953

Code Behaviors & Features

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