What is CVE-2026-103310?

CVE-2026-103310 is a medium-severity vulnerability in Payhere Payment Gateway, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.3/10. Published 2026-11-02.

How severe is CVE-2026-103310?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Payhere Payment Gateway

CVE-2026-103310

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.

Published 2026-11-02 · last modified 2026-11-02.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Payhere Payment Gateway

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

References

wpscan.com/vulnerability/f3b66147-5910-4901-b595-12a5b1db5f8b/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-103310?: CVE-2026-103310 is a medium-severity vulnerability in Payhere Payment Gateway, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.3/10. Published 2026-11-02.
How severe is CVE-2026-103310?: Medium severity. CVSS v3 base score is 5.3 out of 10.