CVE-2024-9866Network attack vector

Subscriber-level stored XSS via unsanitized data parameters

Published Dec 6, 2024 · Updated Apr 8, 2026

Stored XSS in Vollstart Event Tickets with Ticket Scanner before 2.4.4 allows remote authenticated users to execute scripts in visitors' browsers. Ticket-management functionality accepts data parameters without authorization or sufficient sanitization, then renders them without output escaping. Subscriber-level access is sufficient, and execution requires another user to open an injected page, enabling attacker-controlled actions in that user's browser.

CVSS severity5.4
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Vollstart Event Tickets with Ticket Scanner before 2.4.4 allows remote authenticated users to execute scripts in visitors' browsers. Ticket-management functionality accepts data parameters without authorization or sufficient sanitization, then renders them without output escaping. Subscriber-level access is sufficient, and execution requires another user to open an injected page, enabling attacker-controlled actions in that user's browser.

The record

CVE
CVE-2024-9866
Published
Dec 6, 2024
Updated
Apr 8, 2026
Vendor
Vollstart
Product
Event Tickets with Ticket Scanner
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 6, 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

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <=2.4.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Vollstart · Event Tickets with Ticket Scannerversion=0 <=2.4.3

Published CVSS scores

5.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:R/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

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Your stack

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