Vulnerability · Published Oct 27, 2026 · Assigned by WPScan

CVE-2026-103312Payment Integration Wompi <= 4.0.1 - Unauthenticated Payment Confirmation Forgery via IPN Callback

Medium 5.3

In plain English

A medium-severity improper authentication in Payment Integration Wompi from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.2%top 85.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The Payment Integration Wompi WordPress plugin through 4.0.1 does not verify the authenticity of incoming payment notifications on a stock install, because the callback's checksum is keyed on a merchant secret that is empty until it is manually configured, allowing an unauthenticated attacker to forge a notification and mark an arbitrary order as paid.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Payment Integration Wompi	0 – through 4.0.1

Weakness: CWE-287 · 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/617a62de-f7d6-461e-bbf2-db6092a3346f/ exploit, vdb-entry, technical-description