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CVE-2026-26067

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CVE-2026-26067

Published: Apr 21, 2026

Modified: Apr 21, 2026

PUBLISHED

CVSS v3.1

4.9

MEDIUM

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.

VendorProductVersions

octobercms

october

affected
>= 4.0.0, < 4.1.10
affected
< 3.7.14

Weaknesses (CWE)

CWE-863
CWE-184

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

References

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