Vulnerability record · CVE-2020-15273 · published 30 October 2020

CVE-2020-15273: Basercms cross-site scripting vulnerability

Basercms · Basercms

baserCMS before version 4.4.1 is vulnerable to Cross-Site Scripting. The issue affects the following components: Edit feed settings, Edit widget area, Sub site new registration, New category registration. Arbitrary JavaScript may be executed by entering specific characters in the account that can access the file upload function category list, subsite setting list, widget area edit, and feed list on the management screen. The issue was introduced in version 4.0.0. It is fixed in version 4.4.1.

8.1 CVSS 3.1 High EPSS 1.0% · top 37.6% CWE-79 · Cross-site scripting

8.1CVSS 3.1 base score, v2 3.5

1.0%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

6References

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Basercms Basercms

References

Link	Tags
https://github.com/baserproject/basercms/commit/b70474ef9dcee6ad8826360884625dc7ca9041a1	PatchThird Party Advisory
https://github.com/baserproject/basercms/security/advisories/GHSA-wpww-4jf4-4hx8	PatchThird Party Advisory
https://packagist.org/packages/baserproject/basercms	Third Party Advisory
https://github.com/baserproject/basercms/commit/b70474ef9dcee6ad8826360884625dc7ca9041a1	PatchThird Party Advisory
https://github.com/baserproject/basercms/security/advisories/GHSA-wpww-4jf4-4hx8	PatchThird Party Advisory
https://packagist.org/packages/baserproject/basercms	Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-15273), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.