CVE-2026-39891

HIGH

PraisonAI has a Template Injection in Agent Tool Definitions

Title source: cna
STIX 2.1

Description

PraisonAI is a multi-agent teams system. Prior to 4.5.115, the create_agent_centric_tools() function returns tools (like acp_create_file) that process file content using template rendering. When user input from agent.start() is passed directly into these tools without escaping, template expressions in the input are executed rather than treated as literal text. This vulnerability is fixed in 4.5.115.

Scores

CVSS v3 8.8
EPSS 0.0002
EPSS Percentile 5.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-94
Status published
Products (3)
MervinPraison/PraisonAI < 4.5.115
praison/praisonai < 4.5.114
pypi/praisonai 0 - 4.5.115PyPI
Published Apr 08, 2026
Tracked Since Apr 09, 2026