{"id":"CVE-2026-71236","summary":"Grocy - Stored XSS via HTMLPurifier Output Double-Decode","details":"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 <, >, and & back to \u003c, \u003e, and & immediately after purification.","modified":"2026-10-21T02:59:08.215924364Z","published":"2026-08-05T10:56:28.138Z","database_specific":{"cna_assigner":"TuranSec","cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71236.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71236.json"},{"type":"ADVISORY","url":"https://github.com/grocy/grocy"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-71236"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/grocy/grocy","events":[{"introduced":"0"},{"last_affected":"0"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"0"},{"last_affected":"0"}],"source":"AFFECTED_FIELD","strategy":"StandaloneSingleVersion"}]}}],"versions":["0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71236.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N"}]}