CVE-2026-34763
Ruby vulnerability analysis and mitigation

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Directory interpolates the configured root path directly into a regular expression when deriving the displayed directory path. If root contains regex metacharacters such as +, *, or ., the prefix stripping can fail and the generated directory listing may expose the full filesystem path in the HTML output. This issue has been patched in versions 2.2.23, 3.1.21, and 3.2.6.


SourceNVD

Related Ruby vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

GHSA-2x79-gwq3-vxxmHIGH8.7
  • RubyRuby
  • iodine
NoNoApr 14, 2026
GHSA-ghmh-q25g-gxxxHIGH7.5
  • RubyRuby
  • decidim-api
NoYesApr 14, 2026
CVE-2026-40870HIGH7.5
  • RubyRuby
  • decidim-api
NoYesApr 14, 2026
GHSA-w5xj-99cg-rccmHIGH7.5
  • RubyRuby
  • decidim-core
NoYesApr 14, 2026
CVE-2026-40869HIGH7.5
  • RubyRuby
  • decidim-core
NoYesApr 14, 2026

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