CVE-2020-15159: Cross Site Scripting and RCE in baserCMS

high Affects baserproject/basercms. Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

Cross Site Scripting and RCE in baserCMS

Package
baserproject/basercms Composer
Affected versions
>=4.0.0 and <4.3.7
Fixed in
4.3.7
Severity
high  CVSS 7.6
Exploitation
not on CISA KEV · EPSS 2% (82.1th percentile)
Published
2020-08-28
Source
osv.dev

References

CWE-79
NVD recordbaserproject/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.

# one-time install
pip install phpwarden

# then
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