CVE-2026-57122 PraisonAI: Webhook signature verification skipped (fail-open) when secret unset, allowing forged inbound webhooks (WhatsApp & Linear bots)
Attackers can forge webhook messages in PraisonAI when secrets are unset, allowing impersonation and manipulation of agent actions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-57122?
CVE-2026-57122 is a high-severity authentication bypass vulnerability in MervinPraison PraisonAI, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-57122?
3 open source packages ship an affected version, including praisonai.
| Package | Affected | Fixed in |
|---|---|---|
praisonai PyPI | All versions | 4.6.59 |
praisonai PyPI | All versions | 4.6.59 |
praisonai PyPI | All versions | 4.6.59 |
How do I fix CVE-2026-57122?
Upgrade praisonai to 4.6.59 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-57122 being exploited?
There is no known exploitation of CVE-2026-57122 in the wild and no public exploit code.
Sources
Also known as GHSA-x92v-rpx6-p6cw, PYSEC-2026-3523.