Vulnerability · Published Sep 14, 2026 · Assigned by GitHub_M

CVE-2026-57128PraisonAI: Unauthenticated Event Injection via SSE `/publish` Endpoint

Medium 4.3

In plain English

A medium-severity missing authentication in PraisonAI from MervinPraison. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.3%top 83.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	praisonaiagents	1.6.59	GHSA-35w5-pcw4-jx94
PyPI	praisonaiagents	1.6.59	PYSEC-2026-3528

Affected products (as reported)

Vendor	Product	Versions
MervinPraison	PraisonAI	< 1.6.58

Weakness: CWE-306 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-35w5-pcw4-jx94 x_refsource_CONFIRM
https://github.com/MervinPraison/PraisonAI/commit/2f9677abb2ea68eab864ee8b6a828fd0141612e1 x_refsource_MISC
https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.58 x_refsource_MISC