GHSA-MJ58-4J67-93FR

Vulnerability from github – Published: 2026-10-10 09:30 – Updated: 2026-10-10 09:30
VLAI
Details

The LazyLoad Plugin – Lazy Load Images, Videos, and Iframes plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment_content (rendered inline into the page HTML)' parameter in all versions up to, and including, 2.4.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. WordPress core's wp_kses_data allow-list does not strip the crafted payload on save because it uses only permitted tags and attributes; the event handler is concealed inside a broken attribute region and is only promoted to a real DOM attribute by the plugin's render-time str_replace transformation. Additionally, a site administrator must approve the crafted comment before the payload is served to other visitors.

Severity
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-100196"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-10T07:16:39Z",
    "severity": "HIGH"
  },
  "details": "The LazyLoad Plugin \u2013 Lazy Load Images, Videos, and Iframes plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the \u0027comment_content (rendered inline into the page HTML)\u0027 parameter in all versions up to, and including, 2.4.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. WordPress core\u0027s wp_kses_data allow-list does not strip the crafted payload on save because it uses only permitted tags and attributes; the event handler is concealed inside a broken attribute region and is only promoted to a real DOM attribute by the plugin\u0027s render-time str_replace transformation. Additionally, a site administrator must approve the crafted comment before the payload is served to other visitors.",
  "id": "GHSA-mj58-4j67-93fr",
  "modified": "2026-10-10T09:30:26Z",
  "published": "2026-10-10T09:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100196"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/rocket-lazy-load/tags/2.4.0/src/Dependencies/RocketLazyload/Image.php#L115"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/rocket-lazy-load/tags/2.4.0/src/Dependencies/RocketLazyload/Image.php#L116"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/rocket-lazy-load/tags/2.4.0/src/Dependencies/RocketLazyload/Image.php#L118"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/rocket-lazy-load/tags/2.4.0/src/Dependencies/RocketLazyload/Image.php#L70"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/rocket-lazy-load/tags/2.4.0/src/Subscriber/LazyloadSubscriber.php#L313"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/rocket-lazy-load/tags/2.4.0/src/Subscriber/LazyloadSubscriber.php#L326"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/rocket-lazy-load/tags/2.4.0/src/Subscriber/LazyloadSubscriber.php#L82"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026new=3730807%40rocket-lazy-load%2Ftags%2F2.4.1\u0026old=3380138%40rocket-lazy-load%2Ftags%2F2.4.0"
    },
    {
      "type": "WEB",
      "url": "https://wordpress.org/plugins/rocket-lazy-load"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/af1060c6-9247-4059-ad6e-993fb7cee6d4?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/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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  • 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.



Related by attack behaviour

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