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TI-2026-09861 Aliases CVE-2026-11426GHSA-wcfj-4phh-x3w3

UnderConstructionPage PRO <= 5.76 - Authenticated (Subscriber+) Arbitrary File Read via template_thumbnail Parameter

Priority LOW 29CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0046 40th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
webfactoryUnder Construction Page (Pro)up to 5.76—No fix listedCNA
  • Under Construction Page (Pro) Vendorwebfactory Affected up to 5.76 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-11426
  2. 2026-10-03 Alias added: GHSA-wcfj-4phh-x3w3

References

Other 2

  • TI-2020-05688 The WordPress plugin, WP Database Reset through 3.1, contains a flaw that allowed any… CVSS 3.1CRITICAL 9.1
  • TI-2023-03361 Simple Author Box < 2.52 - Contributor+ Arbitrary User Information Disclosure via IDOR CVSS 3.1MEDIUM 4.3
  • TI-2024-00800 Email Log <= 2.4.8 - Unauthenticated Hook Injection CVSS 3.1HIGH 8.1
  • TI-2021-14990 WordPress WP Reset PRO Premium plugin <= 5.98 - Authenticated Database Reset vulnerability CVSS 3.1HIGH 8.8
  • TI-2020-05687 The WordPress plugin, WP Database Reset through 3.1, contains a flaw that gave any… CVSS 3.1HIGH 8.8
  • TI-2025-17735 WordPress AiBud WP plugin <= 1.9 - Arbitrary File Upload vulnerability CVSS 3.1CRITICAL 9.1
See all 45 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences