CVE-2026-31156

A path injection vulnerability exists in OpenPLC v3 (2c82b0e79c53f8c1f1458eee15fec173400d6e1a) as the binary program compiled from glue_generator.cpp does not perform any validation on the file path parameters passed via the command line. The user-controlled input parameters are directly passed to the underlying file operation functions (fopen/ifstream/ofstream) for file reading and writing. An attacker can exploit this vulnerability by constructing a malicious path to read arbitrary readable files.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/unicorn-hyh/CVE-2026-31156	Exploit Third Party Advisory
https://github.com/unicorn-hyh/CVE-2026-31156	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:openplcproject:openplc_v3_firmware:2024-03-09:*:*:*:*:*:*:*

cpe:2.3:h:openplcproject:openplc_v3:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-13 16:16

Updated : 2026-07-05 02:17

NVD link : CVE-2026-31156

Mitre link : CVE-2026-31156

CVE.ORG link : CVE-2026-31156

JSON object : View

Products Affected

openplcproject

openplc_v3_firmware
openplc_v3

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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