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CVE-2026-33658
Ruby vulnerability analysis and mitigation

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.


SourceNVD

Related Ruby vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-34060HIGH7.1
  • RubyRuby
  • ruby-lsp
NoYesMar 27, 2026
CVE-2026-33635MEDIUM4.3
  • RubyRuby
  • icalendar
NoYesMar 26, 2026
GHSA-2j22-pr5w-6gq8LOW2.3
  • RubyRuby
  • loofah
NoYesMar 26, 2026
CVE-2026-33658LOW2.3
  • RubyRuby
  • activestorage
NoYesMar 26, 2026
GHSA-53p3-c7vp-4mccLOW2.1
  • JavaScriptJavaScript
  • action_text-trix
NoYesMar 29, 2026

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