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Medium severity4.9NVD Advisory· Published Apr 21, 2026· Updated Apr 22, 2026

CVE-2026-26067

CVE-2026-26067

Description

October is a Content Management System (CMS) and web platform. Prior to 3.7.14 and 4.1.10, a server-side information disclosure vulnerability was identified in the handling of CSS preprocessor files. Backend users with Editor permissions could craft .less, .sass, or .scss files that leverage the compiler's import functionality to read arbitrary files from the server. This worked even with cms.safe_mode enabled. This vulnerability is fixed in 3.7.14 and 4.1.10.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
october/systemPackagist
< 3.7.143.7.14
october/systemPackagist
>= 4.0.0, < 4.1.104.1.10

Affected products

1

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

3

News mentions

50