CVE-2026-72832: Getgrav Grav

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

Grav versions from 1.5.2 through 2.0.12 contain a stored cross-site scripting vulnerability in the Security::detectXss() function (system/src/Grav/Common/Security.php). The event-handler scan is anchored at `<` and uses `[^>]*?`, which cannot cross the first literal `>`; when a `>` appears inside a quoted attribute value the browser keeps the tag open and parses a subsequent event handler (e.g. onerror), so the detector and browser disagree. A page editor without admin.super privileges can save page content such as `<img src=x title=">" onerror=alert(document.domain)>`, which is accepted, stored, and executed in the site origin when any visitor (including unauthenticated users) views the page. Fixed in 2.0.13.

Affected products

• Getgrav Grav: from 1.5.2, up to and including 2.0.12

Published 2026-08-14. Last modified 2026-10-08.