Vulnerability · Published Oct 21, 2026 · Assigned by WPScan

CVE-2026-87838Wava Payment 0.3.1 - 0.3.9 - Unauthenticated Merchant Credential Overwrite via Install Webhook

Medium 6.5

In plain English

A medium-severity missing authorization in Wava Payment Plugin 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 20% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.3%top 79.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The Wava Payment Plugin WordPress plugin before 0.3.10 does not perform any authorisation, nonce or origin verification on one of its public REST endpoints, allowing unauthenticated attackers to overwrite the stored credential that identifies the merchant account the store's payments are created against, to force the integration into a verified state the site owner never completed, and to remove the payment method from the store's checkout.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Wava Payment Plugin	0.3.1 – before 0.3.10

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

References

https://wpscan.com/vulnerability/96f247d7-3007-4728-9cd7-0ea52c96edb3/ exploit, vdb-entry, technical-description