---
id: CVE-2026-68534
title: >-
  Concrete CMS before 9.5.3 rendered Express entry labels as raw HTML when
  displaying associated entries, resulting in stored cross-site scripting
summary: >-
  Concrete CMS before 9.5.3 rendered Express entry labels as raw HTML when
  displaying associated entries, resulting in stored cross-site scripting. An
  unauthenticated attacker could submit a payload through a public Express Form;
  it then e…
severity: low
cvss: 2.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'
cwe:
  - CWE-79
vendor: Concrete CMS
product: Concrete CMS
affected:
  - concrete_cms >= 5.0.0 <= 9.5.2
published: '2026-09-15'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T19:16:15.097'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-68534'
references:
  - url: >-
      https://documentation.concretecms.org/developers/introduction/version-history/953-release-notes
    label: ff5b8ace-8b95-4078-9743-eac1ca5451de
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-15T19:25:47.311969Z'
cvssSource: cna
ingestedAt: '2026-09-15T18:41:59.179Z'
epss: 0.00565
epssPercentile: 0.44577
---

## Overview

Concrete CMS before 9.5.3 rendered Express entry labels as raw HTML when displaying associated entries, resulting in stored cross-site scripting. An unauthenticated attacker could submit a payload through a public Express Form; it then executed in an administrator's dashboard session when the associated entry was viewed, or in the browser of any visitor to a page using an Express Entry List block with association columns, allowing actions to be performed with that user's privileges. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks v01demort for reporting.

## Remediation

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