PraisonAI is a multi-agent teams system. Prior to 4.5.115, the A2U (Agent-to-User) event stream server in PraisonAI exposes all agent activity without authentication. The create_a2u_routes() function registers the following endpoints with NO authentication checks: /a2u/info, /a2u/subscribe, /a2u/events/{stream_name}, /a2u/events/sub/{id}, and /a2u/health. This vulnerability is fixed in 4.5.115.
History

Wed, 15 Apr 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Praison
Praison praisonai
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:*
Vendors & Products Praison
Praison praisonai

Fri, 10 Apr 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 09 Apr 2026 08:30:00 +0000

Type Values Removed Values Added
First Time appeared Mervinpraison
Mervinpraison praisonai
Vendors & Products Mervinpraison
Mervinpraison praisonai

Wed, 08 Apr 2026 21:15:00 +0000

Type Values Removed Values Added
Description PraisonAI is a multi-agent teams system. Prior to 4.5.115, the A2U (Agent-to-User) event stream server in PraisonAI exposes all agent activity without authentication. The create_a2u_routes() function registers the following endpoints with NO authentication checks: /a2u/info, /a2u/subscribe, /a2u/events/{stream_name}, /a2u/events/sub/{id}, and /a2u/health. This vulnerability is fixed in 4.5.115.
Title PraisonAI has Unauthenticated SSE Event Stream Exposes All Agent Activity in A2U Server
Weaknesses CWE-200
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-04-08T20:44:24.276Z

Updated: 2026-04-10T20:54:03.584Z

Reserved: 2026-04-07T20:32:03.011Z

Link: CVE-2026-39889

cve-icon Vulnrichment

Updated: 2026-04-10T20:53:58.667Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-08T21:17:01.130

Modified: 2026-04-15T17:57:38.450

Link: CVE-2026-39889

cve-icon Redhat

No data.