Auth bypass in Membership For Woocommerce

CVE-2026-19709

The Membership For WooCommerce WordPress plugin before 3.1.2 does not check that an API consumer secret has actually been generated before comparing it against the one supplied in a request, allowing unauthenticated attackers to reach its REST routes and disclose any user's membership plan details on sites where the API has been enabled but no keys were ever generated.

Vulnerability class: Broken Authentication

Published · last modified .

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: 0.003 (23.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-19709: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.001

Affected products

  • Membership For Woocommerce

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-19709?
CVE-2026-19709 is a medium-severity vulnerability in Membership For Woocommerce, classified under Improper Authentication. CVSS score: 5.3/10. Published 2026-08-19.
How severe is CVE-2026-19709?
Medium severity. CVSS v3 base score is 5.3 out of 10.