---
id: CVE-2026-96899
title: >-
  The Optima Express IDX WordPress plugin before 8.7.6 does not properly
  neutralise a script value submitted through one of its REST endpoints before
  storing it and echoing it into the document head when the post is rendered,
  allowing user…
summary: >-
  The Optima Express IDX WordPress plugin before 8.7.6 does not properly
  neutralise a script value submitted through one of its REST endpoints before
  storing it and echoing it into the document head when the post is rendered,
  allowing user…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-79
product: Optima Express IDX
affected:
  - optima_express_idx >= 8.6.0 < 8.7.6
published: '2026-09-27'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T15:17:39.543'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-96899'
references:
  - url: 'https://wpscan.com/vulnerability/649584c7-0549-4080-92f0-bf4b9e8ee789/'
    label: contact@wpscan.com
tags:
  - nvd
  - cve.org
epss: 0.00229
epssPercentile: 0.13614
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-28T00:37:06.758443Z'
ingestedAt: '2026-09-27T06:43:46.834Z'
---

## Overview

The Optima Express IDX WordPress plugin before 8.7.6 does not properly neutralise a script value submitted through one of its REST endpoints before storing it and echoing it into the document head when the post is rendered, allowing users with a role as low as author to perform Stored Cross-Site Scripting attacks.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.