---
title: "Deprecation: #86411 - TSFE->makeCacheHash()"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:deprecation-86411"
source: "Changelog/9.5/Deprecation-86411-TSFE-makeCacheHash.rst"
typo3-version: "9.5"
typo3-major: 9
type: "deprecation"
issue: 86411
forge: "https://forge.typo3.org/issues/86411"
tags: ["Frontend", "FullyScanned"]
rendered: "2026-09-18T17:00:34+00:00"
---

# Deprecation: #86411 - TSFE->makeCacheHash() {#deprecation-86411}

See [forge#86411](https://forge.typo3.org/issues/86411)

## Description {#description}

The method `TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController->makeCacheHash()`
which acts for validating the `&cHash` GET parameter against other given GET parameters
has been marked as deprecated, as this functionality has been moved into a PSR-15 middleware.

## Impact {#impact}

Calling the method directly will trigger a PHP `E_USER_DEPRECATED` error.

## Affected Installations {#affected-installations}

TYPO3 installations with extensions calling the PHP method directly.

## Migration {#migration}

Ensure to use the PSR-15 middleware stack with the PageArgumentValidator in use to verify a
given cHash signature against given query parameters.