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Change History

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. This double-decode reconstructs live HTML/script tags from the entity-encoded form that HTMLPurifier produced to neutralize them, re-introducing stored XSS across API-writable fields (products, recipes, stock, users, chores, and others) that are rendered elsewhere without re-sanitization.

AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

CWE-79

https://github.com/grocy/grocy

[{"vendor":"grocy","product":"grocy","defaultStatus":"unknown","programFiles":["controllers/Api/BaseApiController.php"],"versions":[{"version":"0","status":"affected"}]}]