Vulnerability-Lookup

GHSA-7XM7-CGQR-V2H2

Vulnerability from github – Published: 2026-04-22 21:31 – Updated: 2026-04-22 21:31

Details

The Accessibly plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the REST API in all versions up to, and including, 3.0.3. The plugin registers REST API endpoints at /otm-ac/v1/update-widget-options and /otm-ac/v1/update-app-config with the permission_callback set to __return_true, which means no authentication or authorization check is performed. The updateWidgetOptions() function in AdminApi.php accepts user-supplied JSON data and passes it directly to AccessiblyOptions::updateAppConfig(), which saves it to the WordPress options table via update_option() without any sanitization or validation. The stored widgetSrc value is later retrieved by AssetsManager::enqueueFrontendScripts() and passed directly to wp_enqueue_script() as the script URL, causing it to be rendered as a <script> tag on every front-end page. This makes it possible for unauthenticated attackers to inject arbitrary JavaScript that executes for all site visitors by changing the widgetSrc option to point to a malicious external script.

Severity

7.2 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-3643"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-15T09:16:31Z",
    "severity": "HIGH"
  },
  "details": "The Accessibly plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the REST API in all versions up to, and including, 3.0.3. The plugin registers REST API endpoints at `/otm-ac/v1/update-widget-options` and `/otm-ac/v1/update-app-config` with the `permission_callback` set to `__return_true`, which means no authentication or authorization check is performed. The `updateWidgetOptions()` function in `AdminApi.php` accepts user-supplied JSON data and passes it directly to `AccessiblyOptions::updateAppConfig()`, which saves it to the WordPress options table via `update_option()` without any sanitization or validation. The stored `widgetSrc` value is later retrieved by `AssetsManager::enqueueFrontendScripts()` and passed directly to `wp_enqueue_script()` as the script URL, causing it to be rendered as a `\u003cscript\u003e` tag on every front-end page. This makes it possible for unauthenticated attackers to inject arbitrary JavaScript that executes for all site visitors by changing the `widgetSrc` option to point to a malicious external script.",
  "id": "GHSA-7xm7-cgqr-v2h2",
  "modified": "2026-04-22T21:31:44Z",
  "published": "2026-04-22T21:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3643"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/tags/3.0.3/public/Api/BaseApiController.php#L22"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/tags/3.0.3/public/AssetsManager.php#L63"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/tags/3.0.3/public/Data/AccessiblyOptions.php#L69"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/tags/3.0.3/public/admin/AdminApi.php#L65"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/trunk/public/Api/BaseApiController.php#L22"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/trunk/public/AssetsManager.php#L63"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/trunk/public/Data/AccessiblyOptions.php#L69"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/trunk/public/admin/AdminApi.php#L65"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/f8234ea2-ff80-425f-b83d-29c422b40c6a?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-3643 (GCVE-0-2026-3643)

Vulnerability from cvelistv5 – Published: 2026-04-15 08:28 – Updated: 2026-04-15 16:13

Title

Accessibly <= 3.0.3 - Missing Authorization to Unauthenticated Stored Cross-Site Scripting via Widget Source Injection via REST API

Summary

The Accessibly plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the REST API in all versions up to, and including, 3.0.3. The plugin registers REST API endpoints at `/otm-ac/v1/update-widget-options` and `/otm-ac/v1/update-app-config` with the `permission_callback` set to `__return_true`, which means no authentication or authorization check is performed. The `updateWidgetOptions()` function in `AdminApi.php` accepts user-supplied JSON data and passes it directly to `AccessiblyOptions::updateAppConfig()`, which saves it to the WordPress options table via `update_option()` without any sanitization or validation. The stored `widgetSrc` value is later retrieved by `AssetsManager::enqueueFrontendScripts()` and passed directly to `wp_enqueue_script()` as the script URL, causing it to be rendered as a `<script>` tag on every front-end page. This makes it possible for unauthenticated attackers to inject arbitrary JavaScript that executes for all site visitors by changing the `widgetSrc` option to point to a malicious external script.

Severity

7.2 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-15 13:31 UTC

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/otm-ac…
https://plugins.trac.wordpress.org/browser/otm-ac…
https://plugins.trac.wordpress.org/browser/otm-ac…
https://plugins.trac.wordpress.org/browser/otm-ac…
https://plugins.trac.wordpress.org/browser/otm-ac…
https://plugins.trac.wordpress.org/browser/otm-ac…
https://plugins.trac.wordpress.org/browser/otm-ac…
https://plugins.trac.wordpress.org/browser/otm-ac…

Impacted products

1 product

Vendor	Product	Version
onthemapmarketing	Accessibly – WordPress Website Accessibility	Affected: 0 , ≤ 3.0.3 (semver)

Credits

Yoschanin Pulsirivong Ronnachai Sretawat Na Ayutaya Ronnachai Chaipha

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-3643",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-15T13:31:59.213067Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-15T16:13:04.206Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Accessibly \u2013 WordPress Website Accessibility",
          "vendor": "onthemapmarketing",
          "versions": [
            {
              "lessThanOrEqual": "3.0.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Yoschanin Pulsirivong"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Ronnachai Sretawat Na Ayutaya"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Ronnachai Chaipha"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Accessibly plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the REST API in all versions up to, and including, 3.0.3. The plugin registers REST API endpoints at `/otm-ac/v1/update-widget-options` and `/otm-ac/v1/update-app-config` with the `permission_callback` set to `__return_true`, which means no authentication or authorization check is performed. The `updateWidgetOptions()` function in `AdminApi.php` accepts user-supplied JSON data and passes it directly to `AccessiblyOptions::updateAppConfig()`, which saves it to the WordPress options table via `update_option()` without any sanitization or validation. The stored `widgetSrc` value is later retrieved by `AssetsManager::enqueueFrontendScripts()` and passed directly to `wp_enqueue_script()` as the script URL, causing it to be rendered as a `\u003cscript\u003e` tag on every front-end page. This makes it possible for unauthenticated attackers to inject arbitrary JavaScript that executes for all site visitors by changing the `widgetSrc` option to point to a malicious external script."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/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": "2026-04-15T08:28:17.565Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/f8234ea2-ff80-425f-b83d-29c422b40c6a?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/trunk/public/Api/BaseApiController.php#L22"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/tags/3.0.3/public/Api/BaseApiController.php#L22"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/trunk/public/admin/AdminApi.php#L65"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/tags/3.0.3/public/admin/AdminApi.php#L65"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/trunk/public/Data/AccessiblyOptions.php#L69"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/tags/3.0.3/public/Data/AccessiblyOptions.php#L69"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/trunk/public/AssetsManager.php#L63"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/otm-accessibly/tags/3.0.3/public/AssetsManager.php#L63"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-04-14T19:47:46.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Accessibly \u003c= 3.0.3 - Missing Authorization to Unauthenticated Stored Cross-Site Scripting via Widget Source Injection via REST API"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-3643",
    "datePublished": "2026-04-15T08:28:17.565Z",
    "dateReserved": "2026-03-06T16:08:09.871Z",
    "dateUpdated": "2026-04-15T16:13:04.206Z",
    "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.