CVE-2026-57128 PraisonAI: Unauthenticated Event Injection via SSE `/publish` Endpoint
Unauthenticated attackers can inject events and read server configuration via the SSE publish endpoint in PraisonAI.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-57128?
CVE-2026-57128 is a medium-severity missing authorization vulnerability in MervinPraison PraisonAI, published on 14 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.58, the SSE server in src/praisonai-agents/praisonaiagents/server/server.py does not consult ServerConfig.auth_token before handling /publish, /events, or /info requests. A network client that can reach the server can broadcast arbitrary events to connected clients and obtain server configuration and client-count information. This issue is fixed in praisonaiagents 1.6.58.
Weakness: CWE-306
Which versions are affected by CVE-2026-57128?
3 open source packages ship an affected version, including praisonaiagents.
| Package | Affected | Fixed in |
|---|---|---|
praisonaiagents PyPI | All versions | 1.6.59 |
praisonaiagents PyPI | All versions | 1.6.59 |
praisonaiagents PyPI | All versions | 1.6.59 |
How do I fix CVE-2026-57128?
Upgrade praisonaiagents to 1.6.59 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-57128 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-57128 exists.
Sources
Also known as GHSA-35w5-pcw4-jx94, PYSEC-2026-3528.