CVE-2026-39889 — PraisonAI has Unauthenticated SSE Event Stream Exposes All Agent Activity in A2U Server

CVE-2026-39889

PraisonAI has Unauthenticated SSE Event Stream Exposes All Agent Activity in A2U Server PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
MervinPraison / PraisonAI	affected < 4.5.115

CWE

CWE-200

References

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-f292-66h9-fpmf

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.