CVE-2026-103310 PUBLISHED

PayHere Payment Gateway 2.4.0 - 2.4.5 - Unauthenticated Payment Bypass via Unverified Payment Notification

Assigner: WPScan
Reserved: 30.09.2026 Published: 02.11.2026 Updated: 02.11.2026

The PayHere Payment Gateway WordPress plugin from 2.4.0 through 2.4.5 does not verify the authenticity of payment notifications when the merchant secret is unset, which is the default state, allowing unauthenticated attackers to forge a payment confirmation and mark any order as paid without payment.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS Score: 5.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	Low
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	Unknown
Product	PayHere Payment Gateway
Versions	Default: unknown affected from 2.4.0 to 2.4.5 (incl.)

Credits

Naoki Kawahigashi finder
WPScan coordinator

References

https://wpscan.com/vulnerability/f3b66147-5910-4901-b595-12a5b1db5f8b/

Problem Types

CWE-345 Insufficient Verification of Data Authenticity CWE