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Vendor

rack

41 known vulnerabilities.

Products

rack 38 rack-session 2 rack-contrib 1
All Critical High Medium Low Exploited only Public exploit

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  • Critical 9.3
    CVE-2026-39324 Public exploit

    Rack::Session::Cookie secrets: decrypt failure fallback enables secretless session forgery and Marshal deserialization

    Rack::Session is a session management implementation for Rack. From 2.0.0 to before 2.1.2, Rack::Session::Cookie incorrectly handles decryption failures when configured with secrets:. If cookie decryption fails, the implementation falls back to a default deco…

    rack rack-session rack-session ruby-rack-session Debian Ubuntu RubyGems
  • Medium 4.8
    CVE-2026-34835 Public exploit

    Rack: `Rack::Request` accepts invalid Host characters, enabling host allowlist bypass.

    Rack is a modular Ruby web server interface. From versions 3.0.0.beta1 to before 3.1.21, and 3.2.0 to before 3.2.6, Rack::Request parses the Host header using an AUTHORITY regular expression that accepts characters not permitted in RFC-compliant hostnames, in…

    rack rack rack ruby-rack Debian Ubuntu RubyGems