CVE-2026-29179: low-severity vulnerability in octobercms october
October: Editor Sub-Permission Bypass for Asset and Blueprint File Operations
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 3.3epss 0.1%
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.
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N
Affected products
octobercms · octoberRelated CVEs — octobercms october
In the same product, most dangerous first.
CVE-2021-32648HIGHAccount Takeover in OctobercmsEPSS 91.2%KEVCVE-2022-21705HIGHAuthenticated remote code execution in octobercmsEPSS 8.6%CVE-2020-5295MEDIUMLocal File read vulnerability in OctoberCMSEPSS 7.4%CVE-2021-32650HIGHArbitrary code execution in october/systemEPSS 2.2%CVE-2021-21265MEDIUMOctober CMS vulnerable to Potential Host Header Poisoning on misconfigured serversEPSS 1.7%CVE-2020-15246HIGHLocal File Inclusion by unauthenticated usersEPSS 1.7%