Auth bypass in Wc Vendors

CVE-2026-81428

The WC Vendors WordPress plugin before 2.7.2.1 does not verify ownership or the object type of user-supplied IDs when saving product variations, allowing authenticated users with the vendor role to modify product variations belonging to other vendors, and to change the status and title of arbitrary posts, via IDOR.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (21.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.2% 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-2026-81428: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

  • Wc Vendors

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-81428?
CVE-2026-81428 is a medium-severity vulnerability in Wc Vendors, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2026-09-02.
How severe is CVE-2026-81428?
Medium severity. CVSS v3 base score is 6.5 out of 10.