---
id: CVE-2026-114623
title: >-
  baserCMS: Path traversal in the BcThemeFile admin screen allows file
  disclosure
summary: >-
  baserCMS is a website development framework. In versions 5.0.0 before 5.3.2
  and 5.4.0 before 5.4.2, an authenticated user with only theme-file view
  permission can traverse outside the theme directory through the optional
  BcThemeFile plug…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-22
  - CWE-200
  - CWE-863
vendor: baserproject
product: basercms
affected:
  - 'basercms >= 5.0.0, < 5.3.2'
  - 'basercms >= 5.4.0, < 5.4.2'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-23T14:48:56.336756Z'
published: '2026-10-23'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T14:57:47.887Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-114623'
references:
  - url: >-
      https://github.com/baserproject/basercms/security/advisories/GHSA-rqr8-gmx5-xvrr
    label: >-
      https://github.com/baserproject/basercms/security/advisories/GHSA-rqr8-gmx5-xvrr
  - url: >-
      https://github.com/baserproject/basercms/commit/53ecf177dfb10eb1fb89c4b42d313983329aa162
    label: >-
      https://github.com/baserproject/basercms/commit/53ecf177dfb10eb1fb89c4b42d313983329aa162
  - url: >-
      https://github.com/baserproject/basercms/commit/9bc50d7a47cd834dad5ed80ad7a2e9fcb63f1321
    label: >-
      https://github.com/baserproject/basercms/commit/9bc50d7a47cd834dad5ed80ad7a2e9fcb63f1321
  - url: 'https://github.com/baserproject/basercms/releases/tag/5.3.2'
    label: 'https://github.com/baserproject/basercms/releases/tag/5.3.2'
  - url: 'https://github.com/baserproject/basercms/releases/tag/5.4.2'
    label: 'https://github.com/baserproject/basercms/releases/tag/5.4.2'
tags:
  - cve.org
ingestedAt: '2026-10-23T14:28:08.700Z'
---

## Overview

baserCMS is a website development framework. In versions 5.0.0 before 5.3.2 and 5.4.0 before 5.4.2, an authenticated user with only theme-file view permission can traverse outside the theme directory through the optional BcThemeFile plugin's Admin web screen. ThemeFilesController::parseArgs() constructs a path containing literal ../ segments, and the view and edit actions pass it to ThemeFilesService::get() without containment validation. Authorization checks the unresolved request path, after which ThemeFile::_getContents() reads the resolved file and exposes its contents in the form textarea. A client must preserve the dot segments rather than normalize them away. Readable files are limited to .php, .css, .js, and .ctp; this can disclose application source and config/install.php database credentials in MySQL or PostgreSQL deployments, while SQLite configurations have an empty database password. Reading config/app_local.php may expose the Security.salt fallback, which is effective only when not overridden by environment configuration. The flaw does not disclose .env, .pem, or SQLite .db files, does not itself permit file writes or code execution, and does not affect the separate API getFullpath() route. The plugin is disabled by default and unauthenticated requests are not sufficient. This issue has been patched in versions 5.3.2 and 5.4.2.

## Affected

- `basercms >= 5.0.0, < 5.3.2`
- `basercms >= 5.4.0, < 5.4.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.