CVE-2026-77702
Received Received - Intake

Unauthenticated Ticket Replacement in Eventin WordPress Plugin

Publication date: 2026-09-16

Last updated on: 2026-09-16

Assigner: WPScan

Description
The Eventin WordPress plugin before 4.1.24 does not prevent the token issued to a guest at checkout from being used to change that order's tickets afterwards, allowing unauthenticated users to replace a paid ticket with a free one and complete the order at no charge.

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Meta Information

Published
2026-09-16
Last Modified
2026-09-16
Generated
2026-10-06
AI Q&A
2026-09-16
EPSS Evaluated
2026-10-05
NVD
CVE-2026-77702
EUVD
EUVD-2026-80184

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
eventin eventin to 4.1.24 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability affects the Eventin WordPress plugin before version 4.1.24. It allows unauthenticated users to manipulate ticket prices by reusing a token issued during checkout to modify an existing order. Attackers can replace a paid ticket with a free one and complete the order without payment.

Detection Guidance

Check if your Eventin plugin version is below 4.1.24. Review order logs for unauthorized ticket modifications or free ticket replacements. Monitor network traffic for suspicious checkout token reuse attempts.

Impact Analysis

If you use the Eventin plugin in versions prior to 4.1.24, attackers could exploit this flaw to obtain paid tickets for free by altering order details. This could lead to financial losses for event organizers and unfair advantages for attackers.

Mitigation Strategies

Update the Eventin plugin to version 4.1.24 or later immediately. Disable guest checkout if not required. Implement strict access controls to prevent unauthorized order modifications.

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