GHSA-6288-WF2G-3FWM

Vulnerability from github – Published: 2026-05-05 09:31 – Updated: 2026-05-05 09:31
VLAI?
Details

The GenerateBlocks plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.2.0. This is due to missing object-level authorization checks in the /wp-json/generateblocks/v1/dynamic-tag-replacements REST endpoint. The endpoint only verifies that the user has the edit_posts capability but does not verify the user has permission to access the specific post or its associated data referenced by attacker-controlled id parameters in dynamic tag content. This makes it possible for authenticated attackers, with Contributor-level access and above, to extract sensitive information from arbitrary posts including author email addresses and non-protected post meta values by crafting dynamic tag payloads such as {{post_meta id:|key:}} and {{post_title id:|link:author_email}}.

Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-3454"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-639"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-05T07:16:00Z",
    "severity": "MODERATE"
  },
  "details": "The GenerateBlocks plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.2.0. This is due to missing object-level authorization checks in the /wp-json/generateblocks/v1/dynamic-tag-replacements REST endpoint. The endpoint only verifies that the user has the edit_posts capability but does not verify the user has permission to access the specific post or its associated data referenced by attacker-controlled id parameters in dynamic tag content. This makes it possible for authenticated attackers, with Contributor-level access and above, to extract sensitive information from arbitrary posts including author email addresses and non-protected post meta values by crafting dynamic tag payloads such as {{post_meta id:\u003ctarget\u003e|key:\u003cmeta_key\u003e}} and {{post_title id:\u003ctarget\u003e|link:author_email}}.",
  "id": "GHSA-6288-wf2g-3fwm",
  "modified": "2026-05-05T09:31:55Z",
  "published": "2026-05-05T09:31:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3454"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.0/includes/class-meta-handler.php#L335"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.0/includes/dynamic-tags/class-dynamic-tag-callbacks.php#L364"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.0/includes/dynamic-tags/class-dynamic-tag-callbacks.php#L64"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.0/includes/dynamic-tags/class-dynamic-tags.php#L392"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.0/includes/dynamic-tags/class-dynamic-tags.php#L424"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.0/includes/dynamic-tags/class-dynamic-tags.php#L501"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026new=3495827%40generateblocks%2Ftrunk\u0026old=3415721%40generateblocks%2Ftrunk\u0026sfp_email=\u0026sfph_mail="
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/0297d524-e016-4f8d-920c-d58c62edb2a0?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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