Vulnerability-Lookup

GHSA-GW8M-44WF-CQJF

Vulnerability from github – Published: 2026-06-06 06:30 – Updated: 2026-06-06 06:30

Details

The Click to Chat – WA Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the [chat] shortcode 'num' parameter in all versions up to, and including, 4.38. This is due to insufficient escaping when embedding user-supplied shortcode attribute values inside JavaScript string literals that are then placed in HTML event-handler attributes. The CCW_Shortcode::shortcode() function applies esc_attr() to the 'num' parameter (line 157), which converts single quotes to the HTML entity '. This entity-encoded value is then interpolated directly into a JavaScript window.open() call string delimited by single quotes (line 194/221), and that complete string is placed verbatim into an HTML onclick attribute in the style template files (e.g., sc-style-1.php line 6). Because browsers HTML-decode event attribute values before executing the embedded JavaScript, the ' entities are decoded back to literal single quotes at runtime, allowing the injected payload to break out of the JavaScript string context and execute arbitrary code. This makes it possible for authenticated attackers with Contributor-level access and above to inject arbitrary web scripts into pages that will execute whenever a user clicks the WhatsApp chat button rendered by the [chat] shortcode.

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

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-7795"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-06T04:17:40Z",
    "severity": "MODERATE"
  },
  "details": "The Click to Chat \u2013 WA Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the [chat] shortcode \u0027num\u0027 parameter in all versions up to, and including, 4.38. This is due to insufficient escaping when embedding user-supplied shortcode attribute values inside JavaScript string literals that are then placed in HTML event-handler attributes. The CCW_Shortcode::shortcode() function applies esc_attr() to the \u0027num\u0027 parameter (line 157), which converts single quotes to the HTML entity \u0026#039;. This entity-encoded value is then interpolated directly into a JavaScript window.open() call string delimited by single quotes (line 194/221), and that complete string is placed verbatim into an HTML onclick attribute in the style template files (e.g., sc-style-1.php line 6). Because browsers HTML-decode event attribute values before executing the embedded JavaScript, the \u0026#039; entities are decoded back to literal single quotes at runtime, allowing the injected payload to break out of the JavaScript string context and execute arbitrary code. This makes it possible for authenticated attackers with Contributor-level access and above to inject arbitrary web scripts into pages that will execute whenever a user clicks the WhatsApp chat button rendered by the [chat] shortcode.",
  "id": "GHSA-gw8m-44wf-cqjf",
  "modified": "2026-06-06T06:30:29Z",
  "published": "2026-06-06T06:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-7795"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/tags/4.38/prev/inc/class-ccw-shortcode.php#L157"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/tags/4.38/prev/inc/class-ccw-shortcode.php#L221"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/tags/4.38/prev/inc/commons/styles-list-sc/sc-style-1.php#L6"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/tags/4.39/prev/inc/class-ccw-shortcode.php#L157"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/tags/4.39/prev/inc/class-ccw-shortcode.php#L221"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/tags/4.39/prev/inc/commons/styles-list-sc/sc-style-1.php#L6"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/trunk/prev/inc/class-ccw-shortcode.php#L157"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/trunk/prev/inc/class-ccw-shortcode.php#L221"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/trunk/prev/inc/commons/styles-list-sc/sc-style-1.php#L6"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3557482%40click-to-chat-for-whatsapp\u0026new=3557482%40click-to-chat-for-whatsapp\u0026sfp_email=\u0026sfph_mail="
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/60440b26-1c0b-4fd0-a74a-ff5900d0e9b8?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-2026-7795 (GCVE-0-2026-7795)

Vulnerability from cvelistv5 – Published: 2026-06-06 02:28 – Updated: 2026-06-06 11:48

Title

Click to Chat <= 4.39 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'num' Shortcode Parameter

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 (v2.0.3)

CWE

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

Assigner

Wordfence

References

11 references

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

Impacted products

1 product

Vendor	Product	Version
holithemes	Click to Chat – HoliThemes	Affected: 0 , ≤ 4.39 (semver)

Credits

Vijay

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-7795",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-06T11:38:34.115122Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-06T11:48:08.795Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Click to Chat \u2013 HoliThemes",
          "vendor": "holithemes",
          "versions": [
            {
              "lessThanOrEqual": "4.39",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Vijay"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Click to Chat \u2013 WA Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the [chat] shortcode \u0027num\u0027 parameter in all versions up to, and including, 4.38. This is due to insufficient escaping when embedding user-supplied shortcode attribute values inside JavaScript string literals that are then placed in HTML event-handler attributes. The CCW_Shortcode::shortcode() function applies esc_attr() to the \u0027num\u0027 parameter (line 157), which converts single quotes to the HTML entity \u0026#039;. This entity-encoded value is then interpolated directly into a JavaScript window.open() call string delimited by single quotes (line 194/221), and that complete string is placed verbatim into an HTML onclick attribute in the style template files (e.g., sc-style-1.php line 6). Because browsers HTML-decode event attribute values before executing the embedded JavaScript, the \u0026#039; entities are decoded back to literal single quotes at runtime, allowing the injected payload to break out of the JavaScript string context and execute arbitrary code. This makes it possible for authenticated attackers with Contributor-level access and above to inject arbitrary web scripts into pages that will execute whenever a user clicks the WhatsApp chat button rendered by the [chat] shortcode."
        }
      ],
      "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": "2026-06-06T02:28:35.712Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/60440b26-1c0b-4fd0-a74a-ff5900d0e9b8?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/trunk/prev/inc/class-ccw-shortcode.php#L157"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/trunk/prev/inc/commons/styles-list-sc/sc-style-1.php#L6"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/tags/4.39/prev/inc/commons/styles-list-sc/sc-style-1.php#L6"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/tags/4.39/prev/inc/class-ccw-shortcode.php#L157"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/trunk/prev/inc/class-ccw-shortcode.php#L221"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/tags/4.39/prev/inc/class-ccw-shortcode.php#L221"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/tags/4.38/prev/inc/commons/styles-list-sc/sc-style-1.php#L6"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/tags/4.38/prev/inc/class-ccw-shortcode.php#L157"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/click-to-chat-for-whatsapp/tags/4.38/prev/inc/class-ccw-shortcode.php#L221"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3557482%40click-to-chat-for-whatsapp\u0026new=3557482%40click-to-chat-for-whatsapp\u0026sfp_email=\u0026sfph_mail="
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-05-26T05:43:30.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-06-05T13:37:20.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Click to Chat \u003c= 4.39 - Authenticated (Contributor+) Stored Cross-Site Scripting via \u0027num\u0027 Shortcode Parameter"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-7795",
    "datePublished": "2026-06-06T02:28:35.712Z",
    "dateReserved": "2026-05-04T19:03:00.750Z",
    "dateUpdated": "2026-06-06T11:48:08.795Z",
    "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.

Action not permitted

GHSA-GW8M-44WF-CQJF

CVE-2026-7795 (GCVE-0-2026-7795)

Tags

Sightings

Nomenclature