Vulnerability · Published Oct 11, 2026 · Assigned by WPScan

CVE-2026-81649Fundiin <= 3.4.0 - Unauthenticated Payment Gateway Settings Update and Credential Disclosure

Critical 9.1

In plain English

A critical-severity incorrect authorization in Fundiin cho WooCommerce from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)0.3%top 78.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The Fundiin cho WooCommerce WordPress plugin through 3.4.0 does not have proper authorisation on several of its REST API routes, relying instead on a credential that is identical on every installation, allowing unauthenticated attackers to disclose the store's payment credentials and customer order data, overwrite the payment gateway configuration so that payments are credited elsewhere, and mark unpaid orders as paid. The same missing authorisation also allows arbitrary script to be stored in a field which is output unescaped on the classic checkout, leading to unauthenticated stored XSS on stores that do not use the block-based checkout.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Fundiin cho WooCommerce	0 – through 3.4.0

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

https://wpscan.com/vulnerability/28cec871-1f17-48c7-b836-db705fc5cffa/ exploit, vdb-entry, technical-description