CVE-2023-44383: October CMS stored XSS by authenticated backend user with improper configuration

medium Affects october/system. Feed 2026.10.29.3, updated 2026-10-29; published 2023-11-29; advisory modified 2026-09-10.

October CMS stored XSS by authenticated backend user with improper configuration

Package: october/system Composer
Affected versions: >=3.0.0 and <3.5.2
Fixed in: 3.5.2
Severity: medium CVSS 5.4
Exploitation: not on CISA KEV · EPSS 0% (35.2th percentile)
Published: 2023-11-29
Source: osv.dev

References

CWE-79

NVD record october/system 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-2021-32648 KEV high Account Takeover in Octobercms same package: october/system
CVE-2022-21705 high Authenticated remote code execution in October CMS same package: october/system
CVE-2021-32650 high october/system arbitrary code execution same package: october/system
CVE-2022-24800 high October CMS upload process vulnerable to RCE via Race Condition same package: october/system
CVE-2021-32649 high October/System authenticated file write leads to remote code execution same package: october/system
CVE-2021-41126 high Deleted Admin Can Sign In to Admin Interface same package: october/system