highCVE-2026-15401

VikBooking Hotel Booking Engine & PMS <= 1.8.13 - Unauthenticated Stored Cross-Site Scripting via Custom Field 'vbfX' Parameter

Q: What is affected by CVE-2026-15401?

e4jvikwp VikBooking Hotel Booking Engine & PMS versions listed as affected should be reviewed: <= 1.8.13, up to and including 1.8.13.

Q: What should I fix first?

Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.

Q: How do I confirm the fix worked?

Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.

Q: How are Fixnx security risk categories chosen?

Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.

The VikBooking Hotel Booking Engine & PMS plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'vbfX' parameter in all versions up to, and including, 1.8.13 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The vbfX custom-field value is stored via the public-facing saveorder task, which has no capability or authentication check enforced by default, enabling fully unauthenticated submission of malicious payloads.

Browse WordPress security risks

ProductVikBooking Hotel Booking Engine & PMS

CVSS7.2

EPSSNot scored yet

UpdatedJuly 24, 2026

Quick answer

e4jvikwp VikBooking Hotel Booking Engine & PMS should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.

Who is affected

Affected versions

<= 1.8.13
up to and including 1.8.13

Fixed versions

1.8.14

How to fix it

CVE-2026-15401 affects VikBooking Hotel Booking Engine & PMS and involves cross-site scripting. Successful exploitation may run attacker-controlled script in a trusted user's browser and expose session or application data. Treat this as a high-priority fix, especially when the affected component or endpoint is reachable by untrusted users. Upgrade VikBooking Hotel Booking Engine & PMS to 1.8.14 or a later vendor-supported fixed release.

Inventory every deployment, device, package, plugin, container, build, and environment that uses VikBooking Hotel Booking Engine & PMS.
Compare the installed version with the recorded affected range: <= 1.8.13, *-1.8.13.
Upgrade VikBooking Hotel Booking Engine & PMS to 1.8.14 or a later vendor-supported fixed release.
Until patched, disable the affected VikBooking Hotel Booking Engine & PMS feature or plugin and restrict its public and administrator endpoints.
Review configuration, roles, tokens, network paths, and exposed endpoints connected to VikBooking Hotel Booking Engine & PMS; remove access that is not required.
Review submissions, stored content, administrator activity, CSP reports, and web logs for script payloads or suspicious browser requests.
If exploitation is suspected, isolate affected assets, preserve evidence, rotate exposed credentials or keys, restore trusted data, and rebuild compromised systems before returning them to service.

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Verify the fix

Confirm every affected asset now runs the fixed vendor-supported release or has the documented mitigation for CVE-2026-15401 in place.
Use a safe regression test to confirm the affected cross-site scripting path no longer produces the vulnerable behavior.
Confirm temporary access controls, endpoint restrictions, network blocks, and least-privilege settings remain effective after the update.
Review post-remediation logs and rerun Fixnx plus the relevant package, dependency, firmware, browser, or product-specific security check.
Document affected assets, versions, changes, validation evidence, reviewed logs, and any credential rotation, cleanup, or replacement completed.

Related categories

WordPress Cross-site Scripting

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Trusted references

Source advisoryNVD, Wordfence Source advisoryNVD, Wordfence Source advisoryNVD, Wordfence Source advisoryNVD, Wordfence Source advisoryNVD, Wordfence Source advisoryNVD, Wordfence Source advisoryNVD, Wordfence Source advisoryNVD, Wordfence Source advisoryNVD, Wordfence Source advisoryNVD, Wordfence Source advisoryNVD, Wordfence Source advisoryNVD, Wordfence Source advisoryNVD, Wordfence Source advisoryNVD, Wordfence Wordfence advisoryNVD, Wordfence Wordfence advisoryNVD, Wordfence

FAQ

What is affected by CVE-2026-15401?

e4jvikwp VikBooking Hotel Booking Engine & PMS versions listed as affected should be reviewed: <= 1.8.13, up to and including 1.8.13.

What should I fix first?

Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.

How do I confirm the fix worked?

Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.

How are Fixnx security risk categories chosen?

Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.