CVE-2026-39891

PraisonAI has a Template Injection in Agent Tool Definitions

HIGH
8.8
CVSS Score
Published: April 8, 2026 at 08:46 PM UTC
Updated: July 24, 2026 at 09:20 PM UTC
1 product affected across 1 vendorPraisonAI

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Severity
HIGH8.8
Exploit prediction
EPSS 0.6%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 4.5.114v < 4.5.115
Affected range stops below 4.5.115, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-hwg5-x759-7wjg

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-94

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