EUVD-2025-21034Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V5 - File Handling File type validation, storage isolation
MITRE ATT&CK
2 techniques across 2 tactics: Command and Control, Persistence The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS 8.6, EPSS 28.3%, PoC available. ProcessMaker is an enterprise BPM/workflow platform handling business processes, approvals, and document routing. Compromise exposes business process data, approval chains, and integrated system credentials. |
| Exploit ScenarioDerived | An attacker with admin credentials creates a malicious plugin .tar containing a PHP webshell in the install() method. They upload and install it through ProcessMaker's admin interface. The webshell executes, providing persistent access to the workflow server and all business process data. |
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Alert meAnalysisAIv1 – Mar 16, 2026
ProcessMaker BPM platform versions prior to 3.5.4 contain an unrestricted file upload vulnerability in the plugin installation mechanism. An admin can upload a malicious .tar plugin containing arbitrary PHP code that executes during the plugin's install() method, achieving remote code execution on the workflow automation server.
Earlier versions of this analysis (1)
Arbitrary file upload via plugin system in ProcessMaker BPM enables authenticated RCE on the workflow automation platform.
RemediationAI
Update to ProcessMaker 3.5.4 or later. Restrict plugin installation to verified packages. Change default admin credentials. Monitor the plugin directory for unauthorized files.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
ProcessMaker's plugin installation accepts .tar archives without validating contents. A malicious plugin with arbitrary PHP code in its install() method executes during installation. Admin authentication is required but ProcessMaker often uses default credentials in enterprise deployments.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
4DescriptionCVE.org
An unrestricted file upload vulnerability exists in ProcessMaker versions prior to 3.5.4 due to improper handling of uploaded plugin archives. An attacker with administrative privileges can upload a malicious .tar plugin file containing arbitrary PHP code. Upon installation, the plugin’s install() method is invoked, resulting in execution of attacker-supplied PHP code on the server with the privileges of the web server user. This vulnerability can be chained with CVE-2022-38577 - a privilege escalation flaw in the user profile page - to achieve full remote code execution from a low-privileged account.
Executive ViewAI
ProcessMaker BPM versions before 3.5.4 contain a critical file upload vulnerability that allows administrative users to execute arbitrary code on workflow automation servers through malicious plugin installation. Organizations running ProcessMaker should treat this as a priority security issue, as successful exploitation compromises the entire workflow automation platform and any integrated business processes.
Apply vendor patch. If immediate patching is not possible, restrict plugin installation permissions to a minimal set of trusted administrators and implement file integrity monitoring on plugin directories to detect unauthorized modifications.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Exploit-DB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.
Malicious file upload attacks exploit insufficient validation when web applications accept user-provided files.
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
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GitHub PoC