CVE-2026-71236: Grocy

High severity, CVSS 8.7. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Grocy Grocy: version 0 only

Published 2026-08-05. Last modified 2026-08-26.