CVE-2020-15273: Edit feed settings and others, Cross Site Scripting(XSS) Vulnerability in Latest Release 4.4.0

high Affects baserproject/basercms. Feed 2026.10.29.4, updated 2026-10-29; published 2020-11-04; advisory modified 2026-07-08.

Edit feed settings and others, Cross Site Scripting(XSS) Vulnerability in Latest Release 4.4.0

Package: baserproject/basercms Composer
Affected versions: >=4.4.0 and <4.4.1
Fixed in: 4.4.1
Severity: high CVSS 7.3
Exploitation: not on CISA KEV · EPSS 1% (63.6th percentile)
Published: 2020-11-04
Source: osv.dev

References

CWE-79

NVD record baserproject/basercms advisories

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden deps composer.lock

# or, without Composer
pipx install phpwarden   &&   phpwarden deps composer.lock

Or keep it checked automatically: GitHub Action · pre-commit hook · GitLab CI · Laravel artisan command

Install docs How findings are ranked

Related advisories

CVE-2021-20682 high OS Command Injection in baserCMS same package: baserproject/basercms
CVE-2018-18942 high RCE in baserCMS before 4.1.4 same package: baserproject/basercms
CVE-2026-21861 critical baserCMS has OS Command Injection Leading to Remote Code Execution (RCE) same package: baserproject/basercms
CVE-2020-15277 high Edit template, Remote Code Execution (RCE) Vulnerability in Latest Release 4.4.0 same package: baserproject/basercms
CVE-2021-41243 critical OS Command Injection Vulnerability and Potential Zip Slip Vulnerability in baserCMS same package: baserproject/basercms
CVE-2020-15159 high Cross Site Scripting and RCE in baserCMS same package: baserproject/basercms