Improper Signature Verification in Tickera Plugin by WordPress
CVE-2026-88998

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Tickera
Vendor
CVE Published:
14 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-88998?

The Tickera WordPress plugin prior to version 3.6.0.4 is susceptible to a serious vulnerability that fails to adequately verify the integrity of incoming payment notifications. This weakness allows unauthenticated attackers to bypass verification processes, as the validated signature does not encompass critical transaction details, such as the order information or payment amount. Consequently, malicious actors could forge payment confirmations, resulting in the unauthorized marking of any order as paid, without the actual transaction occurring.

Affected Version(s)

Tickera 0 < 3.6.0.4

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-88998 - Proof of Concept

References

https://wpscan.com/vulnerability/50fe4955-9193-4842-9ea6-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

ryan fabella
WPScan
.