Vulnerability · Published Aug 25, 2026 · Assigned by GitHub_M

CVE-2026-55528praisonaiagents: AgentServer declares auth_token but never enforces it on any route (CWE-862)

High 8.2

In plain English

A high-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 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.2High

Exploit odds (30 days)0.5%top 58.0% 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, AgentServer exposes ServerConfig.auth_token but AgentServer._create_app does not check it on any route. A remote caller can subscribe, publish, and perform other actions without a valid bearer token or X-Auth-Token even when authentication is configured. This issue is fixed in version 1.6.58.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	praisonaiagents	1.6.58	GHSA-7g3p-92qq-8wvh
PyPI	praisonaiagents	1.6.58	PYSEC-2026-3899

Affected products (as reported)

Vendor	Product	Versions
MervinPraison	PraisonAI	< 4.6.58
MervinPraison	praisonaiagents	< 1.6.58

Weakness: CWE-306, CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

References

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-7g3p-92qq-8wvh 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