All vulnerabilities
CVE-2026-88998

Tickera < 3.6.0.4 - Unauthenticated Order Payment Bypass via 2Checkout IPN

Unknown Tickera
Open in ThreatlineRecord JSON
CVSS
5.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.15%Chance of exploitation activity in the next 30 days, higher than 3% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in3.6.0.4Fixed versionCVE List
Published14 Oct 2026Updated 14 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

The Tickera WordPress plugin before 3.6.0.4 does not correctly verify the integrity of incoming payment notifications, and the validated signature does not cover the order or the amount, allowing unauthenticated attackers to forge a payment confirmation and mark arbitrary orders as paid without paying.

Text from CVE List

Affected versions 1

  • Tickeraaffected: all versions before 3.6.0.4CVE List

References 1