CVE-2023-44382: October CMS safe mode bypass using Twig sandbox escape

critical Affects october/system. Feed 2026.10.29.4, updated 2026-10-29; published 2023-11-29; advisory modified 2023-12-04.

October CMS safe mode bypass using Twig sandbox escape

Package: october/system Composer
Affected versions: >=3.0.0 and <3.4.15
Fixed in: 3.4.15
Severity: critical CVSS 9.1
Exploitation: not on CISA KEV · EPSS 1% (58.8th percentile)
Published: 2023-11-29
Source: osv.dev

References

CWE-94

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
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CVE-2021-32649 high October/System authenticated file write leads to remote code execution same package: october/system
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