GHSA-M3X9-6R4V-VVCW

Vulnerability from github – Published: 2026-03-21 06:30 – Updated: 2026-03-21 06:30
VLAI
Details

The Text Toggle plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'title' shortcode attribute of the [tt_part] and [tt] shortcodes in all versions up to and including 1.1. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. Specifically, in the avp_texttoggle_part_shortcode() function, the 'title' attribute is extracted from shortcode attributes and concatenated directly into HTML output without any escaping — both within an HTML attribute context (title="...") on line 116 and in HTML content on line 119. While the 'class' attribute is properly validated using ctype_alnum(), the 'title' attribute has no sanitization whatsoever. An attacker can inject double-quote characters to break out of the title attribute and inject arbitrary HTML attributes including event handlers. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Severity
6.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-3997"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-21T04:17:37Z",
    "severity": "MODERATE"
  },
  "details": "The Text Toggle plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the \u0027title\u0027 shortcode attribute of the [tt_part] and [tt] shortcodes in all versions up to and including 1.1. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. Specifically, in the avp_texttoggle_part_shortcode() function, the \u0027title\u0027 attribute is extracted from shortcode attributes and concatenated directly into HTML output without any escaping \u2014 both within an HTML attribute context (title=\"...\") on line 116 and in HTML content on line 119. While the \u0027class\u0027 attribute is properly validated using ctype_alnum(), the \u0027title\u0027 attribute has no sanitization whatsoever. An attacker can inject double-quote characters to break out of the title attribute and inject arbitrary HTML attributes including event handlers. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.",
  "id": "GHSA-m3x9-6r4v-vvcw",
  "modified": "2026-03-21T06:30:25Z",
  "published": "2026-03-21T06:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3997"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/text-toggle/tags/1.1/avp-texttoggle.php#L108"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/text-toggle/tags/1.1/avp-texttoggle.php#L116"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/text-toggle/tags/1.1/avp-texttoggle.php#L119"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/text-toggle/tags/1.1/avp-texttoggle.php#L72"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/text-toggle/trunk/avp-texttoggle.php#L108"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/text-toggle/trunk/avp-texttoggle.php#L116"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/text-toggle/trunk/avp-texttoggle.php#L119"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/text-toggle/trunk/avp-texttoggle.php#L72"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/d7ac0683-120f-4e76-9d44-5ee1c789b2c8?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}



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