---
title: "CVE-2026-112239: Extension - Broken Access Control"
description: "An extension contains a broken access control vulnerability caused by lack of permission checks on backend endpoint that writes submitted values to page records, letting authenticated backend users modify any page properties beyond their scope."
url: https://panop.io/threat-heartbeat/CVE-2026-112239/
---

# CVE-2026-112239 Extension - Broken Access Control

An extension contains a broken access control vulnerability caused by lack of permission checks on backend endpoint that writes submitted values to page records, letting authenticated backend users modify any page properties beyond their scope.

CVSS base score 7.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-112239)

## Details

Type

Broken Access Control

Impact

Broken Access Control, Privilege Escalation

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Published

20 October 2026

Updated

20 October 2026

Weakness

[CWE-862](https://cwe.mitre.org/data/definitions/862.html)

## Vendor fix

Implement proper permission checks and field restrictions on the backend endpoint to enforce access control.

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-2026-112239](https://nvd.nist.gov/vuln/detail/CVE-2026-112239)
- [https://typo3.org/security/advisory/typo3-ext-sa-2026-035](https://typo3.org/security/advisory/typo3-ext-sa-2026-035)

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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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