# CVE-2026-124253: codepeople Calculated Fields Form DOM-based XSS

Source: https://junglewise.ai/threats/cve-2026-124253-improper-neutralization-of-input-during-web-page-generation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-11. Updated: 2026-11-11  
License: CC BY 4.0 with a link back

CVE-2026-124253 · Severity: high · CVSS 7.1 · Published 2026-11-11

Calculated Fields Form is a WordPress plugin that allows website owners to build custom forms. The plugin contains a cross-site scripting (XSS) vulnerability that allows attackers to inject malicious scripts into web pages. An attacker could steal visitor data or hijack user accounts by tricking users into visiting a crafted page.

Vendors: [CodePeople](https://junglewise.ai/threats/vendors/codepeople).

## Quick answers

**Is CVE-2026-124253 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-124253 being exploited in the wild.

**How severe is CVE-2026-124253?** High severity, with a CVSS score of 7.1, published 11 November 2026.

**Which products and versions are affected?** CodePeople Calculated Fields Form through 5.5.2.8.

**Is there a fix for CVE-2026-124253?** Yes: fixed in 5.5.2.9. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-124253 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-124253?** Check whether you run CodePeople Calculated Fields Form 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.

## How to fix

- Fixed in 5.5.2.9

## Technical details

This is a DOM-based XSS vulnerability in the calculated-fields-form plugin where user input is not properly sanitized during web page generation. The vulnerability requires user interaction (a privileged user must click a malicious link or visit a crafted page) but affects all versions through 5.5.2.8. An attacker can inject arbitrary JavaScript that executes in the context of the victim's browser.

## Affected products

- codepeople Calculated Fields Form through 5.5.2.8

## Timeline

- 2026-11-04: disclosed
- 2026-11-09: advisory
- 2026-11-09: patched

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/calculated-fields-form/vulnerability/wordpress-calculated-fields-form-plugin-5-5-2-8-cross-site-scripting-xss-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/calculated-fields-form/vulnerability/wordpress-calculated-fields-form-plugin-5-5-2-8-cross-site-scripting-xss-vulnerability?_s_id=cve)