CVE-2026-71236
Grocy - Stored XSS via HTMLPurifier Output Double-Decode
CVSS Score
8.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | grocy |
| Product | grocy |
| Published | Aug 5, 2026 |
| Last Updated | Aug 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
grocy / grocy
0
Credits
Bobur Abdugafforov