CVE-2026-57122

PraisonAI: Webhook signature verification skipped (fail-open) when secret unset, allowing forged inbound webhooks (WhatsApp & Linear bots)

State: Published
Severity: 8.6 High
Published: Sep 14, 2026
Updated: Sep 14, 2026
Reserved: Jun 24, 2026

Read the record on cve.org

Description

PraisonAI is a multi-agent teams system. Prior to 4.6.59, the WhatsApp and Linear bot webhook handlers verify HMAC signatures only when WHATSAPP_APP_SECRET or LINEAR_WEBHOOK_SECRET is configured and otherwise parse and dispatch unsigned request bodies. A remote unauthenticated client that reaches the webhook route can forge messages, comments, or agent-session events, impersonate platform users, influence agent prompts and actions, and disrupt bot processing. This issue is fixed in 4.6.59.

Scores

CVSS	Score	Vector	Source
3.1	8.6 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L	GitHub_M

Weaknesses

CWE-345 Insufficient Verification of Data Authenticity
CWE-347 Improper Verification of Cryptographic Signature

Affected Products

Product	Versions
PraisonAIMervinPraison	< 4.6.59Affected

References

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