Vulnerability · Published Sep 28, 2026 · Assigned by WPScan

CVE-2026-89411Paymattic < 4.6.26 - Unauthenticated Payment Bypass via Unbound Stripe PaymentIntent

Medium 5.3

In plain English

A medium-severity insufficient verification of data authenticity in Paymattic from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.1%top 98.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The Paymattic WordPress plugin from 4.6.20 before 4.6.26 does not verify that a confirmed Stripe payment belongs to the order it is applied to, allowing unauthenticated users to mark an arbitrary pending order as paid by confirming a smaller payment of their own against it.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Paymattic	4.6.20 – before 4.6.26

Weakness: CWE-345 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

https://wpscan.com/vulnerability/240a0440-7892-4c03-b282-2fdb6f086bb6/ exploit, vdb-entry, technical-description