CVE-2026-61427: PraisonAI MCP HTTP-stream transport unauthenticated by default (<= 4.6.77)
- Product
- praisonai (PyPI)
- CVE
- CVE-2026-61427
- Affected
- <= 4.6.77
- Fixed in
- 4.6.78
Last verified against sources: October 16, 2026
Am I affected?
praisonai (PyPI): affected <= 4.6.77. Fixed in 4.6.78.
What to do now
- Upgrade praisonai to 4.6.78 or later and configure an API key when serving HTTP-stream. [1]
General practice, not from the source: if the affected software could read tokens or credentials, rotate them after upgrading; pin versions and review changes before updating tools your agents run.
What happened
- According to GitHub Advisory Database's advisory (Oct 8, 2026), PraisonAI's MCP HTTP-stream server authenticated requests only when an API key was configured, and the CLI defaulted --api-key to None. [1]
Impact
- Running praisonai mcp serve --transport http-stream exposed tool enumeration and forwarded tool-call arguments without validating them against inputSchema (CVSS 7.3). [1]
What was done
- Fixed in praisonai 4.6.78. [1]
Sources
- GHSA-hc5v-gxvj-58wh — GitHub Advisory Database
Every statement above was checked against these sources before publishing. Spotted an error? Tell us and we will correct it with a dated note.
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[CVE-2026-61427] CVE-2026-61427: PraisonAI MCP HTTP-stream transport unauthenticated by default (<= 4.6.77)
Product: praisonai (PyPI) | Affected: <= 4.6.77 | Fixed in: 4.6.78
Summary: According to GitHub Advisory Database's advisory (Oct 8, 2026), PraisonAI's MCP HTTP-stream server authenticated requests only when an API key was configured, and the CLI defaulted --api-key to None.
Source & remediation on AgentArmorHQ: https://agentarmorhq.com/incidents/2026/10/cve-2026-61427-praisonai-mcp-http-stream-unauthenticatedCorrections
Report an error or request a correction. We review requests within 5 business days and add a dated correction note.
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