CVE-2024-9504Public exploitNetwork attack vector

Stored XSS via allowlisted SVG uploads

Published Nov 26, 2024 · Updated Apr 8, 2026

Stored XSS in WpDevArt Booking Calendar 3.2.15 and earlier allows remote attackers to execute scripts through uploaded SVG files. The save_reserv function allowlists the .svg extension and moves uploaded files into a web-accessible directory without inspecting their active content. The unauthenticated wpdevart_form_ajax action accepts the upload after a public-page nonce is obtained, and the script runs in the browser of anyone who opens the stored SVG.

CVSS severity7.2
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in WpDevArt Booking Calendar 3.2.15 and earlier allows remote attackers to execute scripts through uploaded SVG files. The save_reserv function allowlists the .svg extension and moves uploaded files into a web-accessible directory without inspecting their active content. The unauthenticated wpdevart_form_ajax action accepts the upload after a public-page nonce is obtained, and the script runs in the browser of anyone who opens the stored SVG.

The record

CVE
CVE-2024-9504
Published
Nov 26, 2024
Updated
Apr 8, 2026
Vendor
WpDevArt
Product
Booking calendar, Appointment Booking System
Classifications
CWE-434, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=3.2.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WpDevArt · Booking calendar, Appointment Booking Systemversion=0 <=3.2.15
WpDevArt · Booking Calendarversion=0 <=3.2.15

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo