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GHSA-GC86-Q63M-V87M

Vulnerability from github – Published: 2026-09-07 15:33 – Updated: 2026-09-07 15:33
VLAI
Details

The Flamingo plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.6.2. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to enumerate taxonomy terms including channel names derived from Contact Form 7 form titles that may reveal internal form purposes, department names, or workflow identifiers, as well as submission counts per channel and contact tag names. The plugin's flamingo_map_meta_cap() filter restricts access to Flamingo's admin UI but does not extend to WordPress core APIs such as XML-RPC wp.getTerms and admin-ajax ajax-tag-search.

Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-12853"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-07T13:18:04Z",
    "severity": "MODERATE"
  },
  "details": "The Flamingo plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.6.2. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to enumerate taxonomy terms including channel names derived from Contact Form 7 form titles that may reveal internal form purposes, department names, or workflow identifiers, as well as submission counts per channel and contact tag names. The plugin\u0027s flamingo_map_meta_cap() filter restricts access to Flamingo\u0027s admin UI but does not extend to WordPress core APIs such as XML-RPC wp.getTerms and admin-ajax ajax-tag-search.",
  "id": "GHSA-gc86-q63m-v87m",
  "modified": "2026-09-07T15:33:51Z",
  "published": "2026-09-07T15:33:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12853"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/flamingo/tags/2.6.1/includes/capabilities.php#L5"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/flamingo/tags/2.6.1/includes/class-contact.php#L18"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/flamingo/tags/2.6.1/includes/class-contact.php#L27"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/flamingo/tags/2.6.1/includes/class-inbound-message.php#L29"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/flamingo/tags/2.6.1/includes/class-inbound-message.php#L46"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/flamingo/tags/2.6.2/includes/capabilities.php#L5"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/flamingo/tags/2.6.2/includes/class-contact.php#L18"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/flamingo/tags/2.6.2/includes/class-contact.php#L27"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/flamingo/tags/2.6.2/includes/class-inbound-message.php#L29"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/flamingo/tags/2.6.2/includes/class-inbound-message.php#L46"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3611179"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/0e79a2b2-0491-4778-996d-0a0a80b2a338?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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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.


Detection rules are retrieved from Rulezet.