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CVE-2026-114623— baserCMS: Path traversal in the BcThemeFile admin screen allows file disclosure

Quick assessment

Affected
baserproject basercms
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

baserCMS 是一个网站开发框架。在 5.0.0 至 5.3.2 之前，以及 5.4.0 至 5.4.2 之前的版本中，仅拥有主题文件查看权限的已认证用户，可通过可选的 BcThemeFile 插件的后台管理网页界面，遍历并访问主题目录之外的文件。ThemeFilesController::parseArgs() 方法会构建包含字面 "../" 片段的路径，而 view 和 edit 动作在未进行路径包含验证的情况下，将该路径传递给 ThemeFilesService::get()。权限检查针对的是未解析的请求

CVSS 6.5 · Medium

Affected Version Matrix 2

VendorProduct Version RangeStatus
baserproject basercms >= 5.0.0, < 5.3.2 affected
>= 5.4.0, < 5.4.2 affected
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I. Basic Information for CVE-2026-114623

Vulnerability Information
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Vulnerability Title
baserCMS: Path traversal in the BcThemeFile admin screen allows file disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
baserproject basercms >= 5.0.0, < 5.3.2 -

II. Public POCs for CVE-2026-114623

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III. Intelligence Information for CVE-2026-114623

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Vendor Advisories for CVE-2026-114623 (1)

Vendor Pages for CVE-2026-114623 (1)

Same Patch Batch · baserproject · 2026-10-23 · 8 CVEs total

CVE-2026-114621 8.8 HIGH baserCMS: SQL injection in the admin panel and admin API
CVE-2026-115481 8.5 HIGH baserCMS: BcCustomContent file fields can be configured to allow executable file extension
CVE-2026-114622 7.2 HIGH baserCMS: Encoded path traversal bypass in the theme file API
CVE-2026-114624 7.2 HIGH baserCMS: PHP object injection via unguarded unserialize() in the widget-area entity
CVE-2026-115457 7.1 HIGH baserCMS: Unauthenticated Stored XSS via Shortcode Expansion in Blog Comments
CVE-2026-115479 5.3 MEDIUM baserCMS: Mail-form auto-replies accept multiple visitor-controlled recipients
CVE-2026-115480 5.3 MEDIUM baserCMS: Public Web API mail-form submission bypasses image CAPTCHA

IV. Related Vulnerabilities

Same product: basercms
Same vendor: baserproject
Same weakness: CWE-22

V. Comments for CVE-2026-114623

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