CVE-2026-39889
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductPraisonai
PublishedApr 8, 2026
First seenApr 8, 2026
Weakness typeCWE-200Sensitive information exposure
How to fix
Update
- praisonai4.5.115 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| praison praisonai | v ≤ 4.5.114 | — |
| praisonaiPyPI | v < 4.5.115 | 4.5.115 |
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