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CVE-2026-56835

PraisonAI Slack app_mention bypasses configured user/channel authorization PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
MervinPraison / PraisonAIaffected >= 3.11.0, < 4.6.59

CWE

CWE-862, CWE-863

References