Vulnerability-Lookup

GHSA-MXQ7-WPP5-2FC9

Vulnerability from github – Published: 2026-07-10 06:31 – Updated: 2026-07-10 06:31

Details

The Post Export Import with Media plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.13.1 via the import_media_file_secure function. This is due to insufficient file extension validation caused by a trailing-dot filename bypass, where the extension allow-list check in ajax_import_media_start() uses pathinfo() on the raw ZIP entry name (e.g., 'shell.php.'), which returns an empty string for the extension, causing the allow-list guard to be skipped and the file to be extracted to a temporary location, after which import_media_file_secure() copies it into the WordPress uploads directory without re-validating the extension. This makes it possible for authenticated attackers, with administrator-level access and above, to upload files that may be executable, which makes remote code execution possible.

Severity

7.2 (High)


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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-13430"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-434"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-10T04:17:47Z",
    "severity": "HIGH"
  },
  "details": "The Post Export Import with Media plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.13.1 via the import_media_file_secure function. This is due to insufficient file extension validation caused by a trailing-dot filename bypass, where the extension allow-list check in ajax_import_media_start() uses pathinfo() on the raw ZIP entry name (e.g., \u0027shell.php.\u0027), which returns an empty string for the extension, causing the allow-list guard to be skipped and the file to be extracted to a temporary location, after which import_media_file_secure() copies it into the WordPress uploads directory without re-validating the extension. This makes it possible for authenticated attackers, with administrator-level access and above, to upload files that may be executable, which makes remote code execution possible.",
  "id": "GHSA-mxq7-wpp5-2fc9",
  "modified": "2026-07-10T06:31:20Z",
  "published": "2026-07-10T06:31:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-13430"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/post-export-import-with-media/tags/1.13.1/includes/class-media-handler.php#L268"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/post-export-import-with-media/tags/1.13.1/includes/class-media-handler.php#L364"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/post-export-import-with-media/tags/1.13.1/includes/class-media-handler.php#L389"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/post-export-import-with-media/tags/1.13.1/includes/class-media-handler.php#L444"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/post-export-import-with-media/tags/1.13.1/includes/class-media-handler.php#L789"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3600506%40post-export-import-with-media\u0026new=3600506%40post-export-import-with-media"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/42f94f80-6157-4778-ad69-184943134fd2?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-13430 (GCVE-0-2026-13430)

Vulnerability from cvelistv5 – Published: 2026-07-10 03:31 – Updated: 2026-07-10 20:31

Title

Post Export Import with Media <= 1.13.1 - Authenticated (Administrator+) Arbitrary File Upload via Trailing-Dot Filename Bypass in ZIP Media Import

Summary

Severity

7.2 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-10 20:25 UTC

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

Wordfence mitre root

References

7 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/post-e…
https://plugins.trac.wordpress.org/browser/post-e…
https://plugins.trac.wordpress.org/browser/post-e…
https://plugins.trac.wordpress.org/browser/post-e…
https://plugins.trac.wordpress.org/browser/post-e…
https://plugins.trac.wordpress.org/changeset?repo…

Impacted products

1 product

Vendor	Product	Version
wpazleen	Post Export Import with Media	Affected: 0 , ≤ 1.13.1 (semver)

Credits

Chloe Chamberland PRISM

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-13430",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-10T20:25:31.134226Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-10T20:31:29.049Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Post Export Import with Media",
          "vendor": "wpazleen",
          "versions": [
            {
              "lessThanOrEqual": "1.13.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Chloe Chamberland"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "PRISM"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Post Export Import with Media plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.13.1 via the import_media_file_secure function. This is due to insufficient file extension validation caused by a trailing-dot filename bypass, where the extension allow-list check in ajax_import_media_start() uses pathinfo() on the raw ZIP entry name (e.g., \u0027shell.php.\u0027), which returns an empty string for the extension, causing the allow-list guard to be skipped and the file to be extracted to a temporary location, after which import_media_file_secure() copies it into the WordPress uploads directory without re-validating the extension. This makes it possible for authenticated attackers, with administrator-level access and above, to upload files that may be executable, which makes remote code execution possible."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-434",
              "description": "CWE-434 Unrestricted Upload of File with Dangerous Type",
              "lang": "en",
              "type": "CWE"
            }
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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-10T03:31:13.126Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/42f94f80-6157-4778-ad69-184943134fd2?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/post-export-import-with-media/tags/1.13.1/includes/class-media-handler.php#L364"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/post-export-import-with-media/tags/1.13.1/includes/class-media-handler.php#L789"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/post-export-import-with-media/tags/1.13.1/includes/class-media-handler.php#L389"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/post-export-import-with-media/tags/1.13.1/includes/class-media-handler.php#L444"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/post-export-import-with-media/tags/1.13.1/includes/class-media-handler.php#L268"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3600506%40post-export-import-with-media\u0026new=3600506%40post-export-import-with-media"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-07-07T15:48:54.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-07-09T15:21:34.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Post Export Import with Media \u003c= 1.13.1 - Authenticated (Administrator+) Arbitrary File Upload via Trailing-Dot Filename Bypass in ZIP Media Import"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
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    "datePublished": "2026-07-10T03:31:13.126Z",
    "dateReserved": "2026-06-26T14:26:06.794Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-MXQ7-WPP5-2FC9

CVE-2026-13430 (GCVE-0-2026-13430)

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