GHSA-6FR4-J24C-QCQ7

Vulnerability from github – Published: 2026-07-28 09:31 – Updated: 2026-07-28 09:31
VLAI
Details

The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the delete_sticker function in all versions up to, and including, 2.15.19. This makes it possible for authenticated attackers, with administrator-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). The prefix check intended to restrict deletion to the uploads directory can be bypassed by crafting a URL that begins with the legitimate uploads base URL but embeds ../ traversal sequences in the path portion, as the normalize_sticker function only applies esc_url_raw(), which does not strip ../ sequences, allowing the traversal payload to be stored verbatim in WordPress options.

Severity
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-16585"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-28T07:16:41Z",
    "severity": "HIGH"
  },
  "details": "The Better Messages \u2013 Chat Rooms, Group Chat, Private Messages \u0026 AI Chat Bots plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the delete_sticker function in all versions up to, and including, 2.15.19. This makes it possible for authenticated attackers, with administrator-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). The prefix check intended to restrict deletion to the uploads directory can be bypassed by crafting a URL that begins with the legitimate uploads base URL but embeds ../ traversal sequences in the path portion, as the normalize_sticker function only applies esc_url_raw(), which does not strip ../ sequences, allowing the traversal payload to be stored verbatim in WordPress options.",
  "id": "GHSA-6fr4-j24c-qcq7",
  "modified": "2026-07-28T09:31:28Z",
  "published": "2026-07-28T09:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-16585"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15.19/addons/stickers/pack-manager.php#L764"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15.19/addons/stickers/rest.php#L153"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15.19/addons/stickers/rest.php#L285"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15.19/addons/stickers/rest.php#L287"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3623636/bp-better-messages/trunk/addons/stickers/rest.php?old=3527109\u0026old_path=bp-better-messages%2Ftrunk%2Faddons%2Fstickers%2Frest.php"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/e9274957-7584-4df6-bb2a-d745510f5033?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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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 patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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