CVE-2026-81896 Details
Concrete CMS before 9.5.3 does not apply HTML entity encoding to user-defined Form block question labels when rendering them as column headers in the Dashboard Form Submissions report (concrete/single_pages/dashboard/reports/forms/legacy.php). a rogue editor could store markup or script in a label that then executes in the browser of any administrator who opens the submissions report for the affected form, producing stored cross-site scripting in the Dashboard. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 8.4 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N. Thanks Yonatan Drori from Tenzai for reporting.
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Exploit prediction scoring system (EPSS) score for CVE-2026-81896
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.24 Probability of exploitation activity being observed over the next 30 days (15th percentile)
CVSS score for CVE-2026-81896
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
5.4 Medium
Products affected by CVE-2026-81896
ConcreteCMS 5.4.1.1
ConcreteCMS 5.4.2
ConcreteCMS 5.4.2.1
ConcreteCMS 5.4.2.2
ConcreteCMS 5.6.1
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-81896 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 4,667 36.01%
DE 1,707 13.17%
JP 1,644 12.68%
GB 1,185 9.14%
NL 567 4.37%
CA 495 3.82%
FR 302 2.33%
CH 296 2.28%
AU 269 2.08%
PL 260 2.01%

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CVE-2026-81896 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 10,041 87.15%
Telecommunications 1,144 9.93%
Education 124 1.08%
Business Services 93 0.81%
Government/Politics 28 0.24%
Finance 13 0.11%
Transportation 12 0.10%
Manufacturing 11 0.10%
Media/Entertainment 11 0.10%
Energy/Resources 10 0.09%

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