Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-33658

Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 Active Storage's proxy controller does not limit the number of byte ranges in an HTTP Range header. A request with thousands of small ranges causes disproportionate CPU usage compared to a normal request for the same file, possibly resulting in a DoS vulnerability. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 5.2%
CVSS Severity
CVSS v3 Score 6.5
Products affected by CVE-2026-33658


Contact Us

Shodan ® - All rights reserved