What is CVE-2026-71236?

CVE-2026-71236 is a high-severity vulnerability in Grocy, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-08-05.

How severe is CVE-2026-71236?

High severity. CVSS v3 base score is 8.7 out of 10.

XSS in Grocy

CVE-2026-71236

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 &am…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.

Affected products

Grocy — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c

Frequently asked questions

What is CVE-2026-71236?: CVE-2026-71236 is a high-severity vulnerability in Grocy, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-08-05.
How severe is CVE-2026-71236?: High severity. CVSS v3 base score is 8.7 out of 10.