{"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","slug":"CVE-2026-56835","body":"## Overview\n\nPraisonAI 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.\n\n## Affected\n\n- `PraisonAI >= 3.11.0, < 4.6.59`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-56835)\n\nAffected packages:\n\n- `praisonai >= 3.11.0, < 4.6.59`\n\nPatched in:\n\n- `praisonai 4.6.59`\n\nSource: https://osv.dev/vulnerability/GHSA-qvpf-j64c-jmhr","depth":"midnight","depthScore":58,"depthScoreParts":{"impact":45.7,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":231406,"id":"CVE-2026-56835","ts":1793412950847,"field":"exploit_available","old":"false","new":"true"}]}