Vulnerability-Lookup

GHSA-WW88-W7JC-GF24

Vulnerability from github – Published: 2026-05-27 09:31 – Updated: 2026-05-27 09:31

Details

The Responsive Check plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'rspcheck' shortcode in versions up to, and including, 0.0.3. This is due to insufficient input sanitization and output escaping on the 'url' (and 'button') shortcode attributes in the rspc_check_shortcode() function, which are echoed directly into iframe src attributes without esc_attr() or esc_url(). 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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-8844"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T07:16:15Z",
    "severity": "MODERATE"
  },
  "details": "The Responsive Check plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the \u0027rspcheck\u0027 shortcode in versions up to, and including, 0.0.3. This is due to insufficient input sanitization and output escaping on the \u0027url\u0027 (and \u0027button\u0027) shortcode attributes in the rspc_check_shortcode() function, which are echoed directly into iframe src attributes without esc_attr() or esc_url(). 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-ww88-w7jc-gf24",
  "modified": "2026-05-27T09:31:13Z",
  "published": "2026-05-27T09:31:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8844"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/responsive-checker-real-time/trunk/responsive-check.php#L14"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/responsive-checker-real-time/trunk/responsive-check.php#L25"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/responsive-checker-real-time/trunk/responsive-check.php#L54"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/d1d571e3-cf6d-4e9b-a3d7-e7e19497b5a9?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-2026-8844 (GCVE-0-2026-8844)

Vulnerability from cvelistv5 – Published: 2026-05-27 05:31 – Updated: 2026-05-27 10:32

Title

Responsive Check <= 0.0.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

Summary

Severity

6.4 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-27 10:16 UTC

CWE

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

Assigner

Wordfence mitre root

References

4 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/respon…
https://plugins.trac.wordpress.org/browser/respon…
https://plugins.trac.wordpress.org/browser/respon…

Impacted products

1 product

Vendor	Product	Version
kevin1804	Responsive Check	Affected: 0 , ≤ 0.0.3 (semver)

Credits

nail majdeddine

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-8844",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-27T10:16:20.319118Z",
                "version": "2.0.3"
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              "type": "ssvc"
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        "providerMetadata": {
          "dateUpdated": "2026-05-27T10:32:40.367Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Responsive Check",
          "vendor": "kevin1804",
          "versions": [
            {
              "lessThanOrEqual": "0.0.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
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      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "nail majdeddine"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Responsive Check plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the \u0027rspcheck\u0027 shortcode in versions up to, and including, 0.0.3. This is due to insufficient input sanitization and output escaping on the \u0027url\u0027 (and \u0027button\u0027) shortcode attributes in the rspc_check_shortcode() function, which are echoed directly into iframe src attributes without esc_attr() or esc_url(). 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."
        }
      ],
      "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)",
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          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/d1d571e3-cf6d-4e9b-a3d7-e7e19497b5a9?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/responsive-checker-real-time/trunk/responsive-check.php#L25"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/responsive-checker-real-time/trunk/responsive-check.php#L14"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/responsive-checker-real-time/trunk/responsive-check.php#L54"
        }
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      "timeline": [
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          "time": "2026-05-26T17:22:02.000Z",
          "value": "Disclosed"
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      "title": "Responsive Check \u003c= 0.0.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes"
    }
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  "cveMetadata": {
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    "assignerShortName": "Wordfence",
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    "datePublished": "2026-05-27T05:31:31.360Z",
    "dateReserved": "2026-05-18T15:26:59.480Z",
    "dateUpdated": "2026-05-27T10:32:40.367Z",
    "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.