Bug 2451983 (CVE-2026-33658) - CVE-2026-33658 rails: activestorage: Active Storage: Denial of Service via HTTP Range header processing
Summary: CVE-2026-33658 rails: activestorage: Active Storage: Denial of Service via HT...
Keywords:
Status: NEW
Alias: CVE-2026-33658
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2452165 2452166
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-26 22:02 UTC by OSIDB Bzimport
Modified: 2026-03-27 08:45 UTC (History)
11 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-03-26 22:02:03 UTC 
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.
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