CVE-2023-51503

WordPress WooCommerce Payments Plugin <= 6.6.2 is vulnerable to Insecure Direct Object References (IDOR)

5.9 Medium

Authorization Bypass Through User-Controlled Key vulnerability in Automattic WooPayments – Fully Integrated Solution Built and Supported by Woo.This issue affects WooPayments – Fully Integrated Solution Built and Supported by Woo: from n/a through 6.9.2.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

0.46%Up 0.4 points since Jan 1, 2024

What each source reports

CVE List Score used 5.9

WordPress WooCommerce Payments Plugin <= 6.6.2 is vulnerable to Insecure Direct Object References (IDOR)

Record: CVE-2023-51503
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-639
Updated: 2026-11-02

EUVDEUVD-2023-56216 5.9

Record: EUVD-2023-56216
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-mg36-6hj2-xj8q 5.9

Authorization Bypass Through User-Controlled Key vulnerability in Automattic WooPayments – Fully...

Record: GHSA-mg36-6hj2-xj8q
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-639
Updated: 2026-11-02

NVD 5.9

Record: CVE-2023-51503
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-639
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-51503 is a medium vulnerability (CVSS 5.9) in Automattic Woopayments, published December 31, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.46%, the 40th percentile. No source names a fixed version.