PT-2026-34005 · Octobercms · October

Published 2026-04-21 · Updated 2026-04-21 · CVE-2026-29179

NVD

CVSS v3.1

3.3

Low

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

October is a Content Management System (CMS) and web platform. Prior to 3.7.16 and 4.1.16, fine-grained sub-permission checks for asset and blueprint file operations were not enforced in the CMS and Tailor editor extensions. This only affects backend users who were explicitly granted editor access but had editor.cms assets or editor.tailor blueprints specifically withheld, an uncommon permission configuration. In this edge case, such users could perform file operations (create, delete, rename, move, upload) on theme assets or blueprint files despite lacking the required sub-permission. A related operator precedence error in the Tailor navigation also disclosed the theme blueprint directory tree under the same conditions. This vulnerability is fixed in 3.7.16 and 4.1.16.

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

CVE-2026-29179

Affected Products

October

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-29179 · Security Note
• https://twitter.com/infoflowcloud/status/2046637547476951223 · Twitter Post
• https://github.com/octobercms/october/security/advisories/GHSA-jvwg-phxx-j3rp · Note
• https://twitter.com/CVEnew/status/2046636247334924480 · Twitter Post