# CVE-2026-81295: Under Construction plugin unauthenticated cross-site scripting

Source: https://junglewise.ai/threats/cve-2026-81295-under-construction-plugin-unauthenticated-cross-site-scripting  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-03. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-81295 · Severity: high · CVSS 7.1 · Published 2026-09-03

The Under Construction WordPress plugin, used to display maintenance/coming-soon pages on websites, contains an unauthenticated cross-site scripting (XSS) vulnerability. An attacker can inject malicious scripts that execute in the browsers of site visitors, potentially stealing visitor data, hijacking accounts, or redirecting users to malicious sites. The vulnerability affects versions up to 5.82 and is resolved in version 5.83.

Vendors: [WebFactory Ltd](https://junglewise.ai/threats/vendors/webfactory-ltd).

## Quick answers

**Is CVE-2026-81295 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-81295 being exploited in the wild.

**How severe is CVE-2026-81295?** High severity, with a CVSS score of 7.1, published 3 September 2026.

**Which products and versions are affected?** WebFactory Ltd Under Construction <=5.82.

**Is there a fix for CVE-2026-81295?** A patch was published on 2026-09-02: Version 5.83 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-81295 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-81295?** Check whether you run WebFactory Ltd Under Construction at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a stored or reflected cross-site scripting (XSS) flaw in the Under Construction plugin (versions ≤ 5.82) that does not require authentication to exploit. An attacker can craft a malicious request or page containing JavaScript payload that, when processed by the plugin, is reflected back to site visitors or stored in the application. While user interaction is required (clicking a malicious link or visiting a crafted page), the low barrier to entry and high prevalence of the plugin make this a significant risk. Patch version 5.83 addresses the vulnerability; immediate upgrade is recommended.

## Affected products

- WebFactory Ltd Under Construction <=5.82

## Timeline

- 2026-09-02: disclosed
- 2026-09-02: patched: Version 5.83 released
- 2026-09-03: advisory

## References

- [https://patchstack.com/database/wordpress/plugin/under-construction-page/vulnerability/wordpress-under-construction-plugin-5-82-cross-site-scripting-xss-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/under-construction-page/vulnerability/wordpress-under-construction-plugin-5-82-cross-site-scripting-xss-vulnerability?_s_id=cve)