GHSA-MRW5-7P4V-67JQ

Vulnerability from github – Published: 2026-08-06 09:30 – Updated: 2026-08-06 09:30
VLAI
Details

The Slider, Gallery, and Carousel by MetaSlider – Image Slider, Video Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'delay' Post Meta Setting in all versions up to, and including, 3.111.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with custom-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The ml-slider custom post type is registered without custom capability restrictions and the ml-slider_settings meta key is unprotected, allowing Author-level users to set the malicious delay value via XML-RPC custom_fields when creating an ml-slider post.

Severity
6.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-18400"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-06T07:16:29Z",
    "severity": "MODERATE"
  },
  "details": "The Slider, Gallery, and Carousel by MetaSlider \u2013 Image Slider, Video Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via \u0027delay\u0027 Post Meta Setting in all versions up to, and including, 3.111.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with custom-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The ml-slider custom post type is registered without custom capability restrictions and the ml-slider_settings meta key is unprotected, allowing Author-level users to set the malicious delay value via XML-RPC custom_fields when creating an ml-slider post.",
  "id": "GHSA-mrw5-7p4v-67jq",
  "modified": "2026-08-06T09:30:30Z",
  "published": "2026-08-06T09:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18400"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.106.0/inc/slider/metaslider.class.php#L54"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.106.0/inc/slider/metaslider.class.php#L660"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.106.0/inc/slider/metaslider.flex.class.php#L346"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.106.0/ml-slider.php#L449"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.106.0/ml-slider.php#L604"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.111.0/inc/slider/metaslider.class.php#L54"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.111.0/inc/slider/metaslider.class.php#L660"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.111.0/inc/slider/metaslider.flex.class.php#L346"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.111.0/ml-slider.php#L449"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ml-slider/tags/3.111.0/ml-slider.php#L604"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3633208/ml-slider/trunk/inc/slider/metaslider.class.php"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?old_path=%2Fml-slider/tags/3.111.0\u0026new_path=%2Fml-slider/tags/3.111.1"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/3f0082c6-c040-4244-be7b-b133fd24d093?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}



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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.
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  • 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.


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