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Vulnerability record · CVE-2021-20681 · published 26 March 2021

CVE-2021-20681: Basercms cross-site scripting vulnerability

Basercms · Basercms

Improper neutralization of JavaScript input in the page editing function of baserCMS versions prior to 4.4.5 allows remote authenticated attackers to inject an arbitrary script via unspecified vectors.

5.4 CVSS 3.1 Medium EPSS 0.73% · top 47.3% CWE-79 · Cross-site scripting
5.4CVSS 3.1 base score, v2 3.5
0.73%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Improper neutralization of JavaScript input in the page editing function of baserCMS versions prior to 4.4.5 allows remote authenticated attackers to inject an arbitrary script via unspecified vectors.

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

Affected products

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

References

LinkTags
https://basercms.net/security/JVN64869876 PatchVendor Advisory
https://jvn.jp/en/jp/JVN64869876/index.html Third Party Advisory
https://basercms.net/security/JVN64869876 PatchVendor Advisory
https://jvn.jp/en/jp/JVN64869876/index.html Third Party Advisory

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2021-20681), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.