Payment bypass via incompletely signed notifications
Published Oct 14, 2026 · Updated Oct 14, 2026
Payment bypass in Tickera before 3.6.0.4 allows remote attackers to mark orders as paid via forged payment notifications. The 2Checkout IPN handler validates a signature that excludes the order and amount, then accepts those unprotected fields as payment confirmation. Exploitation requires no authentication and changes order payment status without payment.
Summary
What happened
Payment bypass in Tickera before 3.6.0.4 allows remote attackers to mark orders as paid via forged payment notifications. The 2Checkout IPN handler validates a signature that excludes the order and amount, then accepts those unprotected fields as payment confirmation. Exploitation requires no authentication and changes order payment status without payment.
The record
- CVE
- CVE-2026-88998
- Published
- Oct 14, 2026
- Updated
- Oct 14, 2026
- Vendor
- Tickera
- Product
- Tickera – Sell Tickets & Manage Events
- Classifications
- CWE-345, T1565.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 14, 2026CVE publishedPublication date reported by the CVE source.
- Oct 14, 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.
- Affected versionversion=0 <3.6.0.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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