CVE-2019-10770: Ratpack

Medium severity, CVSS 6.1. EPSS: 0.9% chance of exploitation in the next 30 days.

All versions of io.ratpack:ratpack-core from 0.9.10 inclusive and before 1.7.6 are vulnerable to Cross-site Scripting (XSS). This affects the development mode error handler when an exception message contains untrusted data. Note the production mode error handler is not vulnerable - so for this to be utilized in production it would require users to not disable development mode.

Affected products

• Ratpack Ratpack: from 0.9.10, before 1.7.6 (fixed in 1.7.6)

Published 2020-01-28. Last modified 2026-06-17.