CVE Catalog

CVE-2026-3907

MediumCVSS 6.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.21%

11th percentile - higher than 11% of all known CVEs

Summary

The Hostel plugin for WordPress up to version 1.1.7 is vulnerable to Stored Cross-Site Scripting via the 'wphostel-book' shortcode. Authenticated attackers with Contributor-level access or higher can inject arbitrary scripts that execute when users visit affected pages.

Risk Assessment

The risk includes session hijacking, data theft, or malware distribution through script execution in victims' browsers.

Recommendation

Immediately update the Hostel plugin to the latest patched version and restrict user privileges to the minimum necessary.

Related vulnerabilities

Original NVD description (English source)

The Hostel plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wphostel-book' shortcode in all versions up to and including 1.1.7. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. Specifically, the second shortcode attribute (used as button text) is passed to the `$text` variable without sanitization at line 79 and then output directly into an HTML `value` attribute at line 91 without `esc_attr()` or any other escaping. 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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS