CVE-2021-21288: Carrierwave Project Carrierwave

Medium severity, CVSS 4.3. EPSS: 1.2% chance of exploitation in the next 30 days.

CarrierWave is an open-source RubyGem which provides a simple and flexible way to upload files from Ruby applications. In CarrierWave before versions 1.3.2 and 2.1.1 the download feature has an SSRF vulnerability, allowing attacks to provide DNS entries or IP addresses that are intended for internal use and gather information about the Intranet infrastructure of the platform. This is fixed in versions 1.3.2 and 2.1.1.

Affected products

• Carrierwave Project Carrierwave: before 1.3.2 (fixed in 1.3.2); from 2.0.1, before 2.1.1 (fixed in 2.1.1)

Published 2021-02-08. Last modified 2026-06-17.