GHSA-7M2V-4F6C-H555

Vulnerability from github – Published: 2026-06-30 06:31 – Updated: 2026-06-30 06:31
VLAI
Details

The Premium Addons for KingComposer plugin for WordPress is vulnerable to unauthorized modification and loss of data in versions up to, and including, 1.1.1. This is due to missing authorization and capability checks on the add_custom_sidebar() and remove_custom_sidebar() AJAX handlers, both of which are exposed through wp_ajax_nopriv_* hooks and write directly to the octagon_custom_sidebar option via update_option(). This makes it possible for unauthenticated attackers to create arbitrary custom widget areas or delete existing custom sidebars, which can cause widgets assigned to those areas to silently lose their registration and stop rendering.

Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-12349"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-30T06:16:26Z",
    "severity": "MODERATE"
  },
  "details": "The Premium Addons for KingComposer plugin for WordPress is vulnerable to unauthorized modification and loss of data in versions up to, and including, 1.1.1. This is due to missing authorization and capability checks on the add_custom_sidebar() and remove_custom_sidebar() AJAX handlers, both of which are exposed through wp_ajax_nopriv_* hooks and write directly to the octagon_custom_sidebar option via update_option(). This makes it possible for unauthenticated attackers to create arbitrary custom widget areas or delete existing custom sidebars, which can cause widgets assigned to those areas to silently lose their registration and stop rendering.",
  "id": "GHSA-7m2v-4f6c-h555",
  "modified": "2026-06-30T06:31:21Z",
  "published": "2026-06-30T06:31:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12349"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/premium-addons-for-kingcomposer/trunk/core/class-sidebar.php#L100"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/premium-addons-for-kingcomposer/trunk/core/class-sidebar.php#L23"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/premium-addons-for-kingcomposer/trunk/core/class-sidebar.php#L68"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/premium-addons-for-kingcomposer/trunk/core/class-sidebar.php#L77"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/premium-addons-for-kingcomposer/trunk/core/class-sidebar.php#L92"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/5145b6bf-a726-4ef8-964f-63504bf7107e?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • 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.