What is CVE-2023-35876?

CVE-2023-35876 is a high-severity vulnerability in Automattic Woocommerce Square, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2023-12-20.

How severe is CVE-2023-35876?

High severity. CVSS v3 base score is 8.1 out of 10.

Is CVE-2023-35876 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Automattic Woocommerce Square

CVE-2023-35876

Authorization Bypass Through User-Controlled Key vulnerability in WooCommerce WooCommerce Square.This issue affects WooCommerce Square: from n/a through 3.8.1.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2023-12-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.008 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

Public proof-of-concept exploits

20142995/nuclei-templates

References

patchstack.com/database/vulnerability/woocommerce-square/wordpress-woocommerce-… (Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2023-35876?: CVE-2023-35876 is a high-severity vulnerability in Automattic Woocommerce Square, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2023-12-20.
How severe is CVE-2023-35876?: High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2023-35876 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.