CVE-2026-56837High· 8.6▾ TwilightPraisonAI is a multi-agent teams system. From version 4.6.56 to before version 4.6.59, PraisonAI's LinearBot starts a public webhook listener on 0.0.0.0 and treats LINEAR_WEBHOOK_SECRET as optional. When the secret is absent, startup onl…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 47.3 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 25.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
PraisonAI is a multi-agent teams system. From version 4.6.56 to before version 4.6.59, PraisonAI's LinearBot starts a public webhook listener on 0.0.0.0 and treats LINEAR_WEBHOOK_SECRET as optional. When the secret is absent, startup only logs a warning and _handle_webhook() skips Linear-Signature verification entirely. An unauthenticated network caller who can reach the webhook endpoint can submit a forged Linear-Event: AgentSession request. The forged request is parsed, scheduled for background processing, dispatched to _handle_agent_session(), and passed into BotSessionManager.chat(). The bot then attempts to post the agent response back to Linear under the configured bot token. The PoV is offline and deterministic. It does not contact Linear. It calls the webhook handler directly, monkey-patches the outbound Linear comment path, and proves both sides of the boundary. This issue has been patched in version 4.6.59.
PraisonAI >= 4.6.56, < 4.6.59Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
praisonai >= 4.6.56, < 4.6.59Patched in:
praisonai 4.6.59Connected by shared product, vendor, weakness, or advisory.
CVE-2026-56836High· 8.2PraisonAI recipe serve Typer command bypasses the non-localhost authentication guard
GHSA-fc26-m9pf-v56qHigh· 8.6PraisonAI LinearBot processes unsigned webhooks when LINEAR_WEBHOOK_SECRET is missing
CVE-2026-57122High· 8.6PraisonAI is a multi-agent teams system
CVE-2026-57112High· 8.3PraisonAI is a multi-agent teams system
CVE-2026-57124Critical· 9.8PraisonAI is a multi-agent teams system
CVE-2026-57146High· 7.5PraisonAI A2U incomplete authentication fix leaves current serve command unauthenticated by default