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  4. CVE 2026 14334 booking calendar appointment booking system 3236
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Back to active CVEs
High · CVSS 8.8CVE-2026-14334

Booking calendar, Appointment Booking System <= 3.2.36 - Unauthenticated Stored XSS via SVG File Upload

Answer in brief

CVE-2026-14334 records a High severity (CVSS 8.8) vulnerability in Booking calendar, Appointment Booking System <= 3.2.36 - Unauthenticated Stored XSS via SVG File Upload. The current sources do not mark it as known exploited. The current feed maps Unknown/Booking calendar, Appointment Booking System (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 19, 2026Updated Aug 26, 2026Source checked Oct 3, 2026First seen by HOL Aug 19, 2026Material review Aug 26, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.8
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/Booking calendar, Appointment Booking System (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Unknown/Booking calendar, Appointment Booking Systemgeneric3.2.18Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Unknown/Booking calendar, Appointment Booking System.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Aug 19, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 26, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 19, 2026

Sources and claim methodology

  • Source referencewpscan.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • WP Ultimate Review < 2.4.4 - Author+ Stored XSS via Review Overview SettingsAlso CWE-79
  • WPMobile.App <= 11.84 - Unauthenticated Stored Cross-Site Scripting via '/android_json/search/<value>/0' Path SegmentAlso CWE-79
  • WPC Estimated Delivery Date for WooCommerce <= 4.0.1 - Reflected Cross-Site Scripting via 'rule_data' ParameterAlso CWE-79
  • Responsive Plus <= 3.5.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode AttributesAlso CWE-79
  • WP Ultimate CSV Importer 7.17 - 9.1 - Admin+ Stored XSS via ZIP Import SVG UploadAlso CWE-79
  • Kubio AI Page Builder < 2.9.3 - Contributor+ Stored XSS via Image Gallery Item URL AttributeAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 3, 2026
References
1 linked source
Open source record