FKIE_CVE-2026-31156

Vulnerability from fkie_nvd - Published: 2026-05-13 16:16 - Updated: 2026-07-05 02:17
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
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.
References
cve@mitre.orghttps://github.com/unicorn-hyh/CVE-2026-31156Exploit, Third Party Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/unicorn-hyh/CVE-2026-31156Exploit, Third Party Advisory
Impacted products
Vendor Product Version
openplcproject openplc_v3_firmware 2024-03-09
openplcproject openplc_v3 -
To clipboard 

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  "lastModified": "2026-07-05T02:17:45.497",
  "metrics": {
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.