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Vulnerability record · CVE-2026-55538 · published 25 August 2026

CVE-2026-55538: Missing authentication for critical function vulnerability

PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.51, praisonai serve agents parses config["api_key"] but _create_agents_app() does not authenticate POST /agents or POST /agents/{agent_name}. Missing or incorrect bearer and X-API-Key values still reach agent execution. This issue is fixed in version 4.6.58.

7.3 CVSS 3.1 High EPSS 0.45% · top 63.5% CWE-306 · Missing authentication for critical function Deferred
7.3CVSS 3.1 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
9 Sep 2026Last modified by NVD

Description

PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.51, praisonai serve agents parses config["api_key"] but _create_agents_app() does not authenticate POST /agents or POST /agents/{agent_name}. Missing or incorrect bearer and X-API-Key values still reach agent execution. This issue is fixed in version 4.6.58.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

References

LinkTags
https://github.com/MervinPraison/PraisonAI/commit/2f9677abb2ea68eab864ee8b6a828fd0141612e1
https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.58
https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-r7v3-x45f-g7hp
https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-r7v3-x45f-g7hp

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Source: NIST National Vulnerability Database (record CVE-2026-55538), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.