CVE-2020-5297: Upload whitelisted files to any directory in OctoberCMS

low Affects october/cms. Feed 2026.10.29.1, updated 2026-10-28; published 2020-06-03; advisory modified 2026-07-08.

Upload whitelisted files to any directory in OctoberCMS

Package: october/cms Composer
Affected versions: >=1.0.319 and <1.0.466
Fixed in: 1.0.466
Severity: low CVSS 3.4
Exploitation: not on CISA KEV · EPSS 1% (67.6th percentile)
Published: 2020-06-03
Source: osv.dev

References

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

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