EUVD-2026-62264
GHSA-r53w-7mcr-qp2x
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Network-reachable unauthenticated upload (AV:N, PR:N); admin must view submission (UI:R); full site compromise possible via admin session (C:H/I:H/A:H); scope unchanged as XSS stays within the application.
Primary rating from Vendor (wpscan).
CVSS VectorVendor: wpscan
Lifecycle Timeline
3DescriptionCVE.org
The Booking calendar, Appointment Booking System WordPress plugin through 3.2.36 does not properly sanitize uploaded SVG files, allowing unauthenticated attackers to upload a file that bypasses the Booking calendar, Appointment Booking System WordPress plugin through 3.2.36's script-stripping and executes arbitrary JavaScript when the SVG is opened, including in the session of an administrator who reviews the submitted booking.
AnalysisAI
Stored cross-site scripting via malicious SVG upload in the Booking Calendar, Appointment Booking System WordPress plugin (versions 3.2.18 through 3.2.36) allows unauthenticated remote attackers to plant persistent JavaScript payloads that execute in the browser session of any administrator who reviews submitted bookings. The plugin's SVG sanitization routine strips some script constructs but fails to neutralize all JavaScript execution vectors within SVG markup, making the bypass achievable without authentication. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The booking form must accept file uploads and permit SVG files - this is a non-default WordPress capability that the plugin explicitly enables. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) reflects a network-reachable, low-complexity, unauthenticated attack path whose sole friction point is the required administrator interaction (UI:R). … 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 | No vendor-released patched version is identified in the available data; the WPScan advisory (https://wpscan.com/vulnerability/9ddd1628-0b06-461b-8a5f-ba977f83fa7f/) and NVD entry (https://nvd.nist.gov/vuln/detail/CVE-2026-14334) should be monitored for a confirmed fix release. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, immediately disable or remove the Booking Calendar plugin from all affected WordPress installations running versions 3.2.18 through 3.2.36 and document which sites depend on this plugin for critical booking workflows. …
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External POC / Exploit Code
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