CVE-2026-56835
PraisonAI Slack app_mention bypasses configured user/channel authorization
Impact
PraisonAI is a multi-agent teams system. From version 3.11.0 to before version 4.6.59, PraisonAI's Slack bot applies its configured allowed_users, allowed_channels, and unknown-user pairing policy in the normal Slack message event handler, but not in the adjacent Slack app_mention event handler. A Slack workspace user who can mention the bot in a channel where the Slack app is present can trigger the configured PraisonAI agent even when: the sender is not in BotConfig.allowed_users; the channel is not in BotConfig.allowed_channels; unknown_user_policy="deny" is configured; and the same event content is correctly dropped by the normal message handler. This issue has been patched in version 4.6.59.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | praisonai | >= 3.11.0, <= 4.6.58 | 4.6.59 |