---
title: "CVE-2026-81907: Concrete CMS - Cross-Site Request Forgery"
description: "Concrete CMS <= 9.5.2 contains a cross-site request forgery caused by lack of enforcement of CSRF token validation in the Express \"Clear Entries\" function, letting remote attackers force authenticated administrators to delete entries, exploit requires victim admin to visit attacker-controlled page."
url: https://panop.io/threat-heartbeat/CVE-2026-81907/
---

# CVE-2026-81907 Concrete CMS - Cross-Site Request Forgery

Concrete CMS <= 9.5.2 contains a cross-site request forgery caused by lack of enforcement of CSRF token validation in the Express "Clear Entries" function, letting remote attackers force authenticated administrators to delete entries, exploit requires victim admin to visit attacker-controlled page.

CVSS base score 7.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.14% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-81907)

## Details

Type

Cross-Site Request Forgery

Impact

Data Tampering, Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N

Published

11 September 2026

Updated

15 October 2026

Weakness

[CWE-352](https://cwe.mitre.org/data/definitions/352.html)

## Vendor fix

Update to a version later than 9.5.2 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-81907](https://nvd.nist.gov/vuln/detail/CVE-2026-81907)
- [https://documentation.concretecms.org/developers/introduction/version-history/953-release-notes](https://documentation.concretecms.org/developers/introduction/version-history/953-release-notes)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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