WebFactory Under Construction Page Plugin up to 5.76 on WordPress Template template_thumbnail path traversal

Summaryinfo

A vulnerability has been found in WebFactory Under Construction Page Plugin up to 5.76 and classified as problematic. Impacted is an unknown function of the component Template. The manipulation of the argument template_thumbnail leads to path traversal. This vulnerability is listed as CVE-2026-11426. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in WebFactory Under Construction Page Plugin up to 5.76. This issue affects an unknown part of the component Template. The manipulation of the argument template_thumbnail with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. The summary by CVE is:

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.

It is possible to read the advisory at wordfence.com. The identification of this vulnerability is CVE-2026-11426 since 06/05/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/11/2026). The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• WebFactory

Name

• Under Construction Page Plugin

Version

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4
• 5.5
• 5.6
• 5.7
• 5.8
• 5.9
• 5.10
• 5.11
• 5.12
• 5.13
• 5.14
• 5.15
• 5.16
• 5.17
• 5.18
• 5.19
• 5.20
• 5.21
• 5.22
• 5.23
• 5.24
• 5.25
• 5.26
• 5.27
• 5.28
• 5.29
• 5.30
• 5.31
• 5.32
• 5.33
• 5.34
• 5.35
• 5.36
• 5.37
• 5.38
• 5.39
• 5.40
• 5.41
• 5.42
• 5.43
• 5.44
• 5.45
• 5.46
• 5.47
• 5.48
• 5.49
• 5.50
• 5.51
• 5.52
• 5.53
• 5.54
• 5.55
• 5.56
• 5.57
• 5.58
• 5.59
• 5.60
• 5.61
• 5.62
• 5.63
• 5.64
• 5.65
• 5.66
• 5.67
• 5.68
• 5.69
• 5.70
• 5.71
• 5.72
• 5.73
• 5.74
• 5.75
• 5.76

CPE 2.3info

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CPE 2.2info

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Entryinfo

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