Vulnerability-Lookup

GHSA-GX73-GV82-355V

Vulnerability from github – Published: 2026-07-11 00:31 – Updated: 2026-07-11 00:31

Details

OpenPLC Runtime v3 contains an authenticated arbitrary file write vulnerability in the legacy web UI program‑upload workflow. The application stores an attacker‑supplied filename (prog_file) directly into the Programs.File database field and later uses this value as the destination path for an uploaded file without validating or restricting the path. Because Python os.path.join() honors attacker‑controlled absolute paths, an authenticated user can write arbitrary files anywhere writable by the OpenPLC webserver process. In the default build pipeline, all C++ source files within the OpenPLC runtime core directory are automatically compiled into the executable runtime binary. By writing a malicious .cpp file into this directory, an authenticated attacker can escalate the arbitrary file write into arbitrary native code execution when the operator triggers a normal program compilation and runtime start.

Severity

9.9 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

8.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-14480"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-73"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-10T23:16:47Z",
    "severity": "HIGH"
  },
  "details": "OpenPLC Runtime v3 contains an authenticated arbitrary file write \nvulnerability in the legacy web UI program\u2011upload workflow. The \napplication stores an attacker\u2011supplied filename (prog_file) directly \ninto the Programs.File database field and later uses this value as the \ndestination path for an uploaded file without validating or restricting \nthe path. Because Python os.path.join() honors attacker\u2011controlled \nabsolute paths, an authenticated user can write arbitrary files anywhere\n writable by the OpenPLC webserver process. In the default build \npipeline, all C++ source files within the OpenPLC runtime core directory\n are automatically compiled into the executable runtime binary. By \nwriting a malicious .cpp file into this directory, an authenticated \nattacker can escalate the arbitrary file write into arbitrary native \ncode execution when the operator triggers a normal program compilation \nand runtime start.",
  "id": "GHSA-gx73-gv82-355v",
  "modified": "2026-07-11T00:31:49Z",
  "published": "2026-07-11T00:31:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-14480"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-190-01.json"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-190-01"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-14480 (GCVE-0-2026-14480)

Vulnerability from cvelistv5 – Published: 2026-07-10 22:17 – Updated: 2026-07-10 22:17

Title

OpenPLC v3 External Control of File Name or Path

Summary

Severity

9.9 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CWE

CWE-73

Assigner

icscert

References

2 references

URL	Tags
https://www.cisa.gov/news-events/ics-advisories/i…
https://github.com/cisagov/CSAF/blob/develop/csaf…

Impacted products

1 product

Vendor	Product	Version
OpenPLC	OpenPLC	Affected: v3 Unaffected: v4

Credits

Grady DeRosa reported this vulnerability to CISA.

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JSON

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  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "OpenPLC",
          "vendor": "OpenPLC",
          "versions": [
            {
              "status": "affected",
              "version": "v3"
            },
            {
              "status": "unaffected",
              "version": "v4"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Grady DeRosa reported this vulnerability to CISA."
        }
      ],
      "descriptions": [
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            {
              "base64": false,
              "type": "text/html",
              "value": "OpenPLC Runtime v3 contains an authenticated arbitrary file write \nvulnerability in the legacy web UI program\u2011upload workflow. The \napplication stores an attacker\u2011supplied filename (prog_file) directly \ninto the Programs.File database field and later uses this value as the \ndestination path for an uploaded file without validating or restricting \nthe path. Because Python os.path.join() honors attacker\u2011controlled \nabsolute paths, an authenticated user can write arbitrary files anywhere\n writable by the OpenPLC webserver process. In the default build \npipeline, all C++ source files within the OpenPLC runtime core directory\n are automatically compiled into the executable runtime binary. By \nwriting a malicious .cpp file into this directory, an authenticated \nattacker can escalate the arbitrary file write into arbitrary native \ncode execution when the operator triggers a normal program compilation \nand runtime start."
            }
          ],
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
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            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
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          "scenarios": [
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              "value": "GENERAL"
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          "descriptions": [
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              "cweId": "CWE-73",
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              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2026-07-10T22:17:49.406Z",
        "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
        "shortName": "icscert"
      },
      "references": [
        {
          "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-190-01"
        },
        {
          "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-190-01.json"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "OpenPLC recommends users upgrade to OpenPLC v4 as OpenPLC v3 is \nend-of-life and is no longer receiving patches, bug fixes, or security \nupdates."
            }
          ],
          "value": "OpenPLC recommends users upgrade to OpenPLC v4 as OpenPLC v3 is \nend-of-life and is no longer receiving patches, bug fixes, or security \nupdates."
        }
      ],
      "source": {
        "advisory": "ICSA-26-190-01",
        "discovery": "EXTERNAL"
      },
      "title": "OpenPLC v3 External Control of File Name or Path",
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  "cveMetadata": {
    "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
    "assignerShortName": "icscert",
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    "datePublished": "2026-07-10T22:17:49.406Z",
    "dateReserved": "2026-07-02T16:00:30.030Z",
    "dateUpdated": "2026-07-10T22:17:49.406Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

Action not permitted

GHSA-GX73-GV82-355V

CVE-2026-14480 (GCVE-0-2026-14480)

Tags

Sightings

Nomenclature