Hostel <= 1.1.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'wphostel-book' Shortcode

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-3907
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-10 09:16:53 UTC
Updated2026-07-10 15:43:30 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 6.4 MEDIUM from [email protected]

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

EPSS: 0.002060000 probability, percentile 0.106330000 (date 2026-07-13)

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

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
3.1CNADECLARED6.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Prasunsen Hostel affected 1.1.7 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/hostel/tags/1.1.6/models/hostel.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/hostel/trunk/controllers/shortcodes.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/hostel/trunk/controllers/shortcodes.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/hostel/tags/1.1.6/controllers/shortcodes.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/hostel/trunk/models/hostel.php [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/30339c0d-6632-4073-b4d5-3bb4a... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/hostel/tags/1.1.6/controllers/shortcodes.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: Muhammad Yudha - DJ (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-07-09T19:36:51.000ZDisclosed

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