Auth bypass in Storegrowth

CVE-2026-78137

The StoreGrowth WordPress plugin before 2.1.2 does not validate a browser-supplied product price on two of its unauthenticated actions, allowing unauthenticated attackers to add a product to the cart at an arbitrary, attacker-chosen price that carries through to the checkout total when the BOGO offer feature is enabled.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (31.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.0% 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-2026-78137: held from 0.003 to 0.004.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

  • Storegrowth

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-78137?
CVE-2026-78137 is a high-severity vulnerability in Storegrowth, classified under Missing Authorization. CVSS score: 7.5/10. Published 2026-08-27.
How severe is CVE-2026-78137?
High severity. CVSS v3 base score is 7.5 out of 10.