---
id: CVE-2026-71236
title: >-
  Grocy's API request-body parser (controllers/Api/BaseApiController.php,
  GetParsedAndFilteredRequestBody) purifies incoming field values with
  HTMLPurifier, then manually reverses HTML-entity encoding of the resulting
  output by replacing &…
summary: >-
  Grocy's API request-body parser (controllers/Api/BaseApiController.php,
  GetParsedAndFilteredRequestBody) purifies incoming field values with
  HTMLPurifier, then manually reverses HTML-entity encoding of the resulting
  output by replacing &…
severity: high
cvss: 8.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N'
cwe:
  - CWE-79
published: '2026-08-05'
updated: '2026-08-10'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-71236'
references:
  - url: 'https://github.com/grocy/grocy'
    label: 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
tags:
  - nvd
epss: 0.00353
epssPercentile: 0.26268
ingestedAt: '2026-08-10T12:39:48.840Z'
---

## Overview

Grocy's API request-body parser (controllers/Api/BaseApiController.php, GetParsedAndFilteredRequestBody) purifies incoming field values with HTMLPurifier, then manually reverses HTML-entity encoding of the resulting output by replacing &amp;lt;, &amp;gt;, and &amp;amp; back to <, >, and & immediately after purification.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.