Vulnerability-Lookup

GHSA-9FP7-MWXW-94FF

Vulnerability from github – Published: 2026-09-18 09:31 – Updated: 2026-09-18 09:31

Details

The Custom Twitter Feeds – A Tweets Widget or X Feed Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'buttoncolor' Shortcode Attribute in all versions up to, and including, 2.8.0 due to insufficient input sanitization and output escaping. 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. This vulnerability is exploitable on common installs where the admin has configured access tokens with zero or multiple legacy feeds, as this causes the ctf_statuses support_legacy_shortcode option to be set to boolean true by default, activating the unfiltered legacy shortcode attribute code path.

Severity

6.4 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-84909"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-18T07:16:50Z",
    "severity": "MODERATE"
  },
  "details": "The Custom Twitter Feeds \u2013 A Tweets Widget or X Feed Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting via \u0027buttoncolor\u0027 Shortcode Attribute in all versions up to, and including, 2.8.0 due to insufficient input sanitization and output escaping. 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. This vulnerability is exploitable on common installs where the admin has configured access tokens with zero or multiple legacy feeds, as this causes the ctf_statuses support_legacy_shortcode option to be set to boolean true by default, activating the unfiltered legacy shortcode attribute code path.",
  "id": "GHSA-9fp7-mwxw-94ff",
  "modified": "2026-09-18T09:31:06Z",
  "published": "2026-09-18T09:31:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84909"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/custom-twitter-feeds/tags/2.8.0/custom-twitter-feed.php#L432"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/custom-twitter-feeds/tags/2.8.0/inc/CTF_Parse.php#L551"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/custom-twitter-feeds/tags/2.8.0/inc/CTF_Settings.php#L234"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/custom-twitter-feeds/tags/2.8.0/inc/CTF_Settings.php#L293"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/custom-twitter-feeds/tags/2.8.0/inc/CtfFeed.php#L139"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/custom-twitter-feeds/tags/2.8.0/inc/CtfFeed.php#L2001"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/custom-twitter-feeds/tags/2.8.0/inc/CtfFeed.php#L2338"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026new=3695675%40custom-twitter-feeds\u0026old=3665650%40custom-twitter-feeds"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b1a9d042-c0c0-477a-8cdf-9fb9d2239059?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"
    }
  ]
}

CVE-2026-84909 (GCVE-0-2026-84909)

Vulnerability from cvelistv5 – Published: 2026-09-18 06:38 – Updated: 2026-09-18 06:38

Title

Custom Twitter Feeds <= 2.8.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'buttoncolor' Shortcode Attribute

Summary

Severity

6.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

Wordfence mitre root

References

9 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/custom…
https://plugins.trac.wordpress.org/browser/custom…
https://plugins.trac.wordpress.org/browser/custom…
https://plugins.trac.wordpress.org/browser/custom…
https://plugins.trac.wordpress.org/browser/custom…
https://plugins.trac.wordpress.org/browser/custom…
https://plugins.trac.wordpress.org/browser/custom…
https://plugins.trac.wordpress.org/changeset?repo…

Impacted products

1 product

Vendor	Product	Version
smub	Custom Twitter Feeds – A Tweets Widget or X Feed Widget	Affected: 0 , ≤ 2.8.0 (semver)

Credits

Wordfence PRISM

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Custom Twitter Feeds \u2013 A Tweets Widget or X Feed Widget",
          "vendor": "smub",
          "versions": [
            {
              "lessThanOrEqual": "2.8.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Wordfence PRISM"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Custom Twitter Feeds \u2013 A Tweets Widget or X Feed Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting via \u0027buttoncolor\u0027 Shortcode Attribute in all versions up to, and including, 2.8.0 due to insufficient input sanitization and output escaping. 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. This vulnerability is exploitable on common installs where the admin has configured access tokens with zero or multiple legacy feeds, as this causes the ctf_statuses support_legacy_shortcode option to be set to boolean true by default, activating the unfiltered legacy shortcode attribute code path."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 6.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-18T06:38:55.694Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b1a9d042-c0c0-477a-8cdf-9fb9d2239059?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-twitter-feeds/tags/2.8.0/inc/CtfFeed.php#L2338"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-twitter-feeds/tags/2.8.0/inc/CTF_Parse.php#L551"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-twitter-feeds/tags/2.8.0/inc/CtfFeed.php#L2001"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-twitter-feeds/tags/2.8.0/inc/CTF_Settings.php#L293"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-twitter-feeds/tags/2.8.0/inc/CTF_Settings.php#L234"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-twitter-feeds/tags/2.8.0/inc/CtfFeed.php#L139"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-twitter-feeds/tags/2.8.0/custom-twitter-feed.php#L432"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026new=3695675%40custom-twitter-feeds\u0026old=3665650%40custom-twitter-feeds"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-09-02T15:57:47.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-09-17T00:00:00.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Custom Twitter Feeds \u003c= 2.8.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via \u0027buttoncolor\u0027 Shortcode Attribute"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-84909",
    "datePublished": "2026-09-18T06:38:55.694Z",
    "dateReserved": "2026-09-02T15:42:41.203Z",
    "dateUpdated": "2026-09-18T06:38:55.694Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.