What is CVE-2020-29156?

CVE-2020-29156 is a medium-severity vulnerability in Woocommerce, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2020-12-27.

How severe is CVE-2020-29156?

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

Is CVE-2020-29156 known to be exploited?

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

Auth bypass in Woocommerce

CVE-2020-29156

The WooCommerce plugin before 4.7.0 for WordPress allows remote attackers to view the status of arbitrary orders via the order_id parameter in a fetch_order_status action.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2020-12-27 · last modified 2026-06-17.

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:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.040 (90.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.040 · newest: 0.040 · change: 0.000

Affected products

Woocommerce

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

Public proof-of-concept exploits

References

github.com/Ko-kn3t/CVE-2020-29156 (Exploit, Third Party Advisory)
raw.githubusercontent.com/woocommerce/woocommerce/master/changelog.txt (Third Party Advisory, Release Notes)

Frequently asked questions

What is CVE-2020-29156?: CVE-2020-29156 is a medium-severity vulnerability in Woocommerce, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2020-12-27.
How severe is CVE-2020-29156?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2020-29156 known to be exploited?: 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.