Nexi XPay Build: Unverified results alter orders and expose guest details
An unauthenticated attacker can supply an unverified payment result to several public routes. The plugin trusts that result to mark orders paid or failed, cancel them, and disclose order keys that expose guest buyer details. The exact route names and request fields are undisclosed. Affected versions: 7.0.0 through 7.6.2. No fixed release is confirmed.
- Component
- Nexi XPay Build
- Plugin slug
nexi-xpay-build- Affected
- 7.0.0 through 7.6.2
- Safe version
- See mitigation notes
- Published
- Oct 07, 2026
- Weakness
- CWE-862 — Missing Authorization
This CVE was published Oct 07, 2026 and is one of 3 known issues for this plugin.
Update, patch or deactivate.
No fixed release is confirmed. Disable the affected feature or deactivate the component until a confirmed fix is available. Application-level remediation: Authenticate every payment-result route, verify the result with the payment provider, and enforce order binding and valid state transitions before changing status. Protect order keys and guest details behind appropriate access checks.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Nexi XPay Build WordPress plugin through 7.6.2 does not verify the payment result supplied to several of its unauthenticated routes, allowing attackers to mark arbitrary orders as paid or failed, to cancel them, and to obtain order keys which expose guest buyers' details.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N