---
id: CVE-2026-56835
title: PraisonAI Slack app_mention bypasses configured user/channel authorization
summary: >-
  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 handle…
severity: high
cvss: 8.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L'
cvssSource: cna
cwe:
  - CWE-862
  - CWE-863
vendor: MervinPraison
product: PraisonAI
affected:
  - 'PraisonAI >= 3.11.0, < 4.6.59'
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-29T02:50:19.140712Z'
exploitAvailable: true
published: '2026-10-23'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T02:50:43.187Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-56835'
references:
  - url: >-
      https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-qvpf-j64c-jmhr
    label: >-
      https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-qvpf-j64c-jmhr
  - url: 'https://github.com/MervinPraison/PraisonAI'
tags:
  - cve.org
  - exploit-available
  - osv
  - pip
epss: 0.00215
epssPercentile: 0.11944
aliases:
  - GHSA-qvpf-j64c-jmhr
ecosystem: pip
patched:
  - praisonai 4.6.59
ingestedAt: '2026-07-21T19:04:57.515Z'
---

## Overview

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

- `PraisonAI >= 3.11.0, < 4.6.59`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-56835)

Affected packages:

- `praisonai >= 3.11.0, < 4.6.59`

Patched in:

- `praisonai 4.6.59`

Source: https://osv.dev/vulnerability/GHSA-qvpf-j64c-jmhr