Under Construction Page (Pro): Filesystem traversal
Under Construction Page (Pro) is affected by filesystem traversal. Exploitation requires at least subscriber-level access. A crafted path can escape the intended directory and reach files or directories elsewhere on the server. The published affected range is <= 5.76.
- Component
- Under Construction Page (Pro)
- Plugin slug
underconstructionpage-pro- Affected
- <= 5.76
- Safe version
> 5.76- Published
- Jul 11, 2026
This CVE was published Jul 11, 2026 and is one of 1 known issue for this plugin.
Update, patch or deactivate.
Update Under Construction Page (Pro) to a release after 5.76, or disable and remove it until a fixed version is available.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The UnderConstructionPage PRO plugin for WordPress is vulnerable to Arbitrary File Read in all versions up to, and including, 5.76. This is due to the plugin accepting arbitrary local file paths in the template_thumbnail parameter and copying their contents into a publicly accessible uploads file. This makes it possible for authenticated attackers, with Subscriber-level access and above, to read arbitrary files on the server, which can contain sensitive information.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N