GHSA-F4R3-XFJM-5X8P

Vulnerability from github – Published: 2026-04-24 06:31 – Updated: 2026-08-14 21:31
VLAI
Details

The Royal Elementor Addons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via image captions in the Image Grid/Slider/Carousel widget in versions up to and including 1.7.1056. This is due to insufficient output escaping in the render_post_thumbnail() function, where wp_kses_post() is used instead of esc_attr() for the alt attribute context. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses a page with the malicious image displayed in the media grid widget.

Severity
6.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-5428"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-24T06:16:08Z",
    "severity": "MODERATE"
  },
  "details": "The Royal Elementor Addons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via image captions in the Image Grid/Slider/Carousel widget in versions up to and including 1.7.1056. This is due to insufficient output escaping in the render_post_thumbnail() function, where wp_kses_post() is used instead of esc_attr() for the alt attribute context. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses a page with the malicious image displayed in the media grid widget.",
  "id": "GHSA-f4r3-xfjm-5x8p",
  "modified": "2026-08-14T21:31:08Z",
  "published": "2026-04-24T06:31:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5428"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/royal-elementor-addons/tags/1.7.1049/modules/media-grid/widgets/wpr-media-grid.php#L6752"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/royal-elementor-addons/tags/1.7.1049/modules/media-grid/widgets/wpr-media-grid.php#L6755"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/royal-elementor-addons/trunk/modules/media-grid/widgets/wpr-media-grid.php#L6752"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/royal-elementor-addons/trunk/modules/media-grid/widgets/wpr-media-grid.php#L6755"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3503209%40royal-elementor-addons\u0026new=3503209%40royal-elementor-addons\u0026sfp_email=\u0026sfph_mail="
    },
    {
      "type": "WEB",
      "url": "https://research.cleantalk.org/cve-2026-5428"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ba7b8fe5-aa49-4a70-89c9-1b95a30b1142?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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