EUVD-2026-82667
GHSA-m65h-f32q-qmrr
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Unauthenticated remote injection (PR:N) but execution needs an admin to view the conversation (UI:R); stored XSS crosses into the admin's authenticated context (S:C) with limited browser-scoped C:L/I:L, no availability impact.
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
Lifecycle Timeline
6DescriptionCVE.org
The VikBooking Hotel Booking Engine & PMS WordPress plugin before 1.8.15 does not restrict the type of files unauthenticated visitors may attach to its live chat, nor sanitize their contents, allowing them to store active content which is executed in the context of an administrator viewing the conversation.
AnalysisAI
Stored cross-site scripting in the VikBooking Hotel Booking Engine & PMS WordPress plugin (versions before 1.8.15) allows unauthenticated visitors to attach files to the plugin's live-chat feature whose type is not restricted and whose contents are not sanitized, so injected active content executes in the authenticated session of an administrator or staff member who opens the conversation. Injection needs no authentication, but successful execution is gated on user interaction - the targeted admin must view the malicious attachment in the WordPress admin area - and publicly available exploit code exists, with no CISA KEV confirmation of active exploitation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires that the plugin's live-chat feature be enabled and reachable by unauthenticated visitors (its default customer-facing use case), so injection needs no authentication (PR:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuinely notable stored XSS in a WordPress booking plugin, but the vendor's 8.8 CVSS is inflated for a cross-site scripting flaw. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade VikBooking Hotel Booking Engine & PMS to version 1.8.15 or later, which is the version boundary at which the plugin restricts attachment file types and sanitizes their contents; this is the only complete fix and should be applied through the normal WordPress plugin update mechanism or by deploying the vendor package. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all WordPress installations for the VikBooking Hotel Booking Engine & PMS plugin and upgrade any instance running a version before 1.8.15 to the vendor-released patch version 1.8.15 or later; if immediate upgrade is not possible, restrict access to the WordPress admin area and live-chat attachments to trusted staff only and monitor for suspicious admin activity. …
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External POC / Exploit Code
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