Passeum Ticketing <= 1.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'shop_name' Setting
Summary
| CVE | CVE-2026-7421 |
|---|---|
| State | PUBLISHED |
| Assigner | Wordfence |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-06-03 00:16:44 UTC |
| Updated | 2026-07-21 19:10:00 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 4.4 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
EPSS: 0.002080000 probability, percentile 0.110880000 (date 2026-07-21)
Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 4.4 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N |
| 3.1 | CNA | DECLARED | 4.4 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
HighPrivileges Required
HighUser Interaction
NoneScope
ChangedConfidentiality
LowIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Passeum | Passeum Ticketing | affected 1.0 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.wordfence.com/threat-intel/vulnerabilities/id/48363f1f-dae8-4efa-824f-09855... | [email protected] | www.wordfence.com | |
| plugins.trac.wordpress.org/browser/passeum-ticketing/tags/1.0/passeum-ticketing.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/passeum-ticketing/tags/1.0/passeum-ticketing.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/passeum-ticketing/trunk/inc/settings.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/passeum-ticketing/trunk/passeum-ticketing.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/passeum-ticketing/trunk/passeum-ticketing.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/passeum-ticketing/tags/1.0/inc/settings.php | [email protected] | plugins.trac.wordpress.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: KEVIN LEE (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-06-02T10:57:01.000Z | Disclosed |
There are currently no legacy QID mappings associated with this CVE.