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Tickera – Sell Tickets & Manage Events < 3.6.0.4 — Unauthenticated Arbitrary Order Payment Confirmation

CVE-2026-88998Published · Updated

Action summary

Affected: <3.6.0.4Update to 3.6.0.4 or newer

All remediation steps
Watch plugin
Severity
Medium5.3
CVSS
5.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-345 Insufficient Verification of Data Authenticity
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Tickera – Sell Tickets & Manage Events tickera-event-ticketing-system

  1. Affected< 3.6.0.4
  2. Patched in3.6.0.4

Update to 3.6.0.4 or newer.

You are affected if you run < 3.6.0.4. Version 3.6.0.4 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Tickera – Sell Tickets & Manage Events.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 3.6.0.4, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Tickera – Sell Tickets & Manage Events to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Ryan Fabella.

The Tickera – Sell Tickets & Manage Events plugin for WordPress is vulnerable to Payment Verification Bypass in all versions up to 3.6.0.4. This is due to an incorrect option key in the payment notification hash computation — `get_option( 'sid', 'secret_word', '2checkout' )` returned the SID instead of the secret word, meaning the HMAC signature never incorporated the secret credential and was trivially reproducible by any attacker who knew the SID. This makes it possible for unauthenticated attackers to mark arbitrary orders as paid without completing payment by forging a 2Checkout payment notification with a predictable hash signature. The 2Checkout payment gateway must be enabled and configured in the plugin settings.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in Tickera – Sell Tickets & Manage Events

All 21
More vulnerabilities in Tickera – Sell Tickets & Manage Events
SeverityVulnerabilityCVEPublished
High7.5Unauthenticated SQL Injection
≤3.6.0.6Update to 3.6.0.7
CVE-2026-105889
High8.1Unauthenticated PHP Object Injection
≤3.6.0.2Update to 3.6.0.3
CVE-2026-82226
Medium6.5Authenticated (Staff+) SQL Injection via 'tc_order_status_filter' Parameter
≤3.6.0.1Update to 3.6.0.2
CVE-2026-15448
Medium6.5Authenticated (Staff+) SQL Injection via 'tc_event_filter' Parameter
≤3.6.0.1Update to 3.6.0.2
CVE-2026-15761
Medium6.5Authenticated (Staff+) SQL Injection via 's' Parameter
≤3.6.0.0Update to 3.6.0.1
CVE-2026-13754

Timeline

  1. CVE published

    Severity medium, CVSS 5.3

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
CVE® identifiers
[object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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