CVE-2026-26067
MEDIUM EPSS 15.7%
Published Apr 21, 20262mo ago · Modified Jun 17, 20261w ago
4.9 CVSS 3.1
Published Apr 21, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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
Threat Intelligence
EPSS Exploit Probability
15.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 2
CWE-184
CWE-863 Incorrect Authorization Authorization
References 1
- github.com https://github.com/octobercms/october/security/advisories/GHSA-3888-q23f-x7qh
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.