What is CVE-2020-15243?

CVE-2020-15243 is a critical-severity vulnerability in Smartstore, classified under Improper Authentication. CVSS score: 9.1/10. Published 2020-10-08.

How severe is CVE-2020-15243?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Auth bypass in Smartstore

CVE-2020-15243

Affected versions of Smartstore have a missing WebApi Authentication attribute. This vulnerability affects Smartstore shops in version 4.0.0 & 4.0.1 which have installed and activated the Web API plugin. Users of Smartstore 4.0.0 and 4.0.1 must merge their repository with 4.0.x or overwrite the file SmartStore.Web.Framework in the */bin* directory of the deployed shop with this file. As a workaround without updating uninstall the Web API plugin to close this vulnerability.

Vulnerability class: Broken Authentication

Published 2020-10-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.012 (66.9th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Smartstore — versions 4.0.0, 4.0.1
Smartstore Smartstorenet — versions >= 4.0.0, <= 4.0.1

Weakness classification (CWE)

References

github.com/smartstore/SmartStoreNET/security/advisories/GHSA-8g9m-jx26-qp4h (Third Party Advisory)

Frequently asked questions

What is CVE-2020-15243?: CVE-2020-15243 is a critical-severity vulnerability in Smartstore, classified under Improper Authentication. CVSS score: 9.1/10. Published 2020-10-08.
How severe is CVE-2020-15243?: Critical severity. CVSS v3 base score is 9.1 out of 10.