---
title: "Breaking: #79327 - The veriCode - vC parameter is not evaluated any more"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:breaking-79327"
source: "Changelog/8.6/Breaking-79327-TheVeriCode-VCParameterIsNotEvaluatedAnyMore.rst"
typo3-version: "8.6"
typo3-major: 8
type: "breaking"
issue: 79327
forge: "https://forge.typo3.org/issues/79327"
tags: ["Backend", "PHP-API"]
rendered: "2026-09-17T21:17:42+00:00"
---

# Breaking: #79327 - The veriCode - vC parameter is not evaluated any more {#breaking-79327-the-vericode-vc-parameter-is-not-evaluated-any-more}

See [forge#79327](https://forge.typo3.org/issues/79327)

## Description {#description}

The `veriCode` (`&vC=...`) parameter generated by `AbstractUserAuthentication::veriCode` is not evaluated anymore in:

-   `ImportExportController::checkUpload()`
-   `FileController::main()`
-   `EditDocumentController::processData()`
-   `SimpleDataHandlerController::main()`

Also the following properties have been removed:

-   `EditDocumentController::vC`
-   `SimpleDataHandlerController::vC`
-   `ImportExportController::vC`

## Impact {#impact}

Any code reading from the removed `vC` properties will now throw an "Undefined property" notice.

## Affected Installations {#affected-installations}

Any installation having code relying on 'vC' property being present in aforementioned classes, or relying on `vC` parameter being checked.

## Migration {#migration}

Remove calls to `veriCode` or any `vC` HTTP parameter evaluation from your code. Ensure your code uses `moduleToken` to protect backend urls.