Vulnerability-Lookup

GHSA-4R7R-W926-GM5J

Vulnerability from github – Published: 2026-06-03 00:30 – Updated: 2026-06-03 00:30

Details

The Passeum Ticketing plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 1.0. This is due to the get_shop_url() method returning the shop_name setting value without sanitization when it begins with "http", combined with insufficient validation in the validate_shop_name() function which only checks for empty values and string type. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary external scripts by setting the shop_name to an attacker-controlled URL (e.g., https://attacker.com), which causes the plugin to enqueue external JavaScript and CSS from the attacker-controlled domain via wp_register_script() and wp_register_style(). The injected scripts execute on every frontend page containing any Passeum Ticketing shortcode, affecting all site visitors. Please note that this does not affect single-site installations as administrators already have 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

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-7421"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-03T00:16:44Z",
    "severity": "MODERATE"
  },
  "details": "The Passeum Ticketing plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 1.0. This is due to the `get_shop_url()` method returning the `shop_name` setting value without sanitization when it begins with \"http\", combined with insufficient validation in the `validate_shop_name()` function which only checks for empty values and string type. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary external scripts by setting the `shop_name` to an attacker-controlled URL (e.g., `https://attacker.com`), which causes the plugin to enqueue external JavaScript and CSS from the attacker-controlled domain via `wp_register_script()` and `wp_register_style()`. The injected scripts execute on every frontend page containing any Passeum Ticketing shortcode, affecting all site visitors. Please note that this does not affect single-site installations as administrators already have the `unfiltered_html` capability.",
  "id": "GHSA-4r7r-w926-gm5j",
  "modified": "2026-06-03T00:30:27Z",
  "published": "2026-06-03T00:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-7421"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/passeum-ticketing/tags/1.0/inc/settings.php#L141"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/passeum-ticketing/tags/1.0/passeum-ticketing.php#L202"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/passeum-ticketing/tags/1.0/passeum-ticketing.php#L40"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/passeum-ticketing/trunk/inc/settings.php#L141"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/passeum-ticketing/trunk/passeum-ticketing.php#L202"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/passeum-ticketing/trunk/passeum-ticketing.php#L40"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/48363f1f-dae8-4efa-824f-098550245ca3?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"
    }
  ]
}

CVE-2026-7421 (GCVE-0-2026-7421)

Vulnerability from cvelistv5 – Published: 2026-06-02 23:27 – Updated: 2026-06-03 14:07

Title

Passeum Ticketing <= 1.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'shop_name' Setting

Summary

The Passeum Ticketing plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 1.0. This is due to the `get_shop_url()` method returning the `shop_name` setting value without sanitization when it begins with "http", combined with insufficient validation in the `validate_shop_name()` function which only checks for empty values and string type. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary external scripts by setting the `shop_name` to an attacker-controlled URL (e.g., `https://attacker.com`), which causes the plugin to enqueue external JavaScript and CSS from the attacker-controlled domain via `wp_register_script()` and `wp_register_style()`. The injected scripts execute on every frontend page containing any Passeum Ticketing shortcode, affecting all site visitors. Please note that this does not affect single-site installations as administrators already have 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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-03 13:18 UTC

CWE

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

Assigner

Wordfence mitre root Scorecard

References

7 references

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

Impacted products

1 product

Vendor	Product	Version
passeum	Passeum Ticketing	Affected: 0 , ≤ 1.0 (semver)

Credits

KEVIN LEE

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-7421",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-03T13:18:04.431808Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        "providerMetadata": {
          "dateUpdated": "2026-06-03T14:07:40.856Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Passeum Ticketing",
          "vendor": "passeum",
          "versions": [
            {
              "lessThanOrEqual": "1.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "KEVIN LEE"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Passeum Ticketing plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 1.0. This is due to the `get_shop_url()` method returning the `shop_name` setting value without sanitization when it begins with \"http\", combined with insufficient validation in the `validate_shop_name()` function which only checks for empty values and string type. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary external scripts by setting the `shop_name` to an attacker-controlled URL (e.g., `https://attacker.com`), which causes the plugin to enqueue external JavaScript and CSS from the attacker-controlled domain via `wp_register_script()` and `wp_register_style()`. The injected scripts execute on every frontend page containing any Passeum Ticketing shortcode, affecting all site visitors. Please note that this does not affect single-site installations as administrators already have the `unfiltered_html` capability."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 4.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          }
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
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              "lang": "en",
              "type": "CWE"
            }
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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-02T23:27:48.373Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/48363f1f-dae8-4efa-824f-098550245ca3?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/passeum-ticketing/tags/1.0/passeum-ticketing.php#L202"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/passeum-ticketing/trunk/passeum-ticketing.php#L202"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/passeum-ticketing/tags/1.0/passeum-ticketing.php#L40"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/passeum-ticketing/trunk/passeum-ticketing.php#L40"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/passeum-ticketing/tags/1.0/inc/settings.php#L141"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/passeum-ticketing/trunk/inc/settings.php#L141"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-06-02T10:57:01.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Passeum Ticketing \u003c= 1.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via \u0027shop_name\u0027 Setting"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
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    "datePublished": "2026-06-02T23:27:48.373Z",
    "dateReserved": "2026-04-29T14:25:19.682Z",
    "dateUpdated": "2026-06-03T14:07:40.856Z",
    "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.

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.

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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.

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GHSA-4R7R-W926-GM5J

CVE-2026-7421 (GCVE-0-2026-7421)

Tags

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Nomenclature

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