GHSA-39PG-69JQ-6VX9

Vulnerability from github – Published: 2026-04-22 09:31 – Updated: 2026-04-22 09:31
VLAI
Details

The Short Comment Filter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Minimum Count' settings field in all versions up to and including 2.2. This is due to insufficient input sanitization (no sanitize callback on register_setting) and missing output escaping (no esc_attr() on the echoed value in the input's value attribute). The option value is stored via update_option() and rendered unescaped in an HTML attribute context. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in the settings page that will execute whenever a user accesses that page. This is particularly impactful in WordPress multisite installations or when DISALLOW_UNFILTERED_HTML is set, where administrators are not granted the unfiltered_html capability.

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

{
  "affected": [],
  "aliases": [
    "CVE-2026-3362"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-22T09:16:21Z",
    "severity": "MODERATE"
  },
  "details": "The Short Comment Filter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the \u0027Minimum Count\u0027 settings field in all versions up to and including 2.2. This is due to insufficient input sanitization (no sanitize callback on register_setting) and missing output escaping (no esc_attr() on the echoed value in the input\u0027s value attribute). The option value is stored via update_option() and rendered unescaped in an HTML attribute context. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in the settings page that will execute whenever a user accesses that page. This is particularly impactful in WordPress multisite installations or when DISALLOW_UNFILTERED_HTML is set, where administrators are not granted the unfiltered_html capability.",
  "id": "GHSA-39pg-69jq-6vx9",
  "modified": "2026-04-22T09:31:32Z",
  "published": "2026-04-22T09:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3362"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/short-comment-filter/tags/2.2/classes/short-comment-filter-settings.php#L21"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/short-comment-filter/tags/2.2/classes/short-comment-filter-settings.php#L54"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/short-comment-filter/tags/2.2/classes/short-comment-filter-settings.php#L61"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/short-comment-filter/tags/2.2/views/settings.php#L25"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/short-comment-filter/trunk/classes/short-comment-filter-settings.php#L21"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/short-comment-filter/trunk/classes/short-comment-filter-settings.php#L54"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/short-comment-filter/trunk/classes/short-comment-filter-settings.php#L61"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/short-comment-filter/trunk/views/settings.php#L25"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/4ba46475-bf54-49a8-9b0e-fae3fb4e1df9?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.