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OpenPLC v3 CVE-2026-31156

| EUVD-2026-29960 MEDIUM
Path Traversal (CWE-22)
2026-05-13 mitre GHSA-p6vg-5mm7-744x
Path Traversal
6.5
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
Analysis Generated
May 14, 2026 - 15:22 vuln.today
CVSS changed
May 14, 2026 - 15:22 NVD
6.5 (MEDIUM)
CVE Published
May 13, 2026 - 00:00 nvd
UNKNOWN (no severity yet)
CVE Published
May 13, 2026 - 00:00 nvd
MEDIUM 6.5

DescriptionNVD

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.

AnalysisAI

Path traversal in OpenPLC v3 allows authenticated remote attackers to read arbitrary files via unvalidated file path parameters passed to the glue_generator binary. The vulnerability affects command-line input handling in the compiled binary derived from glue_generator.cpp, where user-controlled paths are passed directly to file operation functions (fopen, ifstream, ofstream) without validation. …

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CVE-2026-31156 vulnerability details – vuln.today
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