Critical severity · published Sep 14, 2026
CVE-2026-57124
PraisonAI UI MCP connect endpoint allows unauthenticated local command execution
9.8
CVSS
1%
EPSS
No
On KEV
Description
PraisonAI is a multi-agent teams system. Prior to 4.6.59, the default UI host applications expose POST /api/mcp/connect without mandatory authentication and accept caller-controlled command and args values that PraisonAIUI passes to StdioMCPClient to start a local process. Because the UI commands bind to 0.0.0.0 by default, a reachable unauthenticated client can execute commands as the UI service account even when the MCP handshake later fails. This vulnerability is fixed in 4.6.59.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 64% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PR
PraisonAI · MervinPraison
< 4.6.59 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-57124
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-57124
github.com
https://github.com/MervinPraison/PraisonAI/commit/2adfe7e8323f6deec66925cf15a885b6238895e9
github.com
https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.59
github.com
https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-p75f-6fp4-p57w
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