CVE-2026-71236 (GCVE-0-2026-71236)

Vulnerability from cvelistv5 – Published: 2026-08-05 10:56 – Updated: 2026-08-10 11:45
VLAI
Title
Grocy - Stored XSS via HTMLPurifier Output Double-Decode
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 &lt;, &gt;, and &amp; back to <, >, and & immediately after purification.
Severity
8.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 12:48 UTC
CWE
  • CWE-79 - Cross-site Scripting
Assigner
TuranSec CNA
References
URL Tags
https://github.com/grocy/grocy third-party-advisory
Impacted products
Vendor Product Version
grocy grocy Affected: 0
Create a notification for this product.
Date Public
2026-08-05 10:56
Credits
Bobur Abdugafforov
Show details on NVD website
To clipboard 

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