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Vendor archive

rack CVEs

Beta · best-effort

38 CVEs tagged to vendor rack1 Critical, 15 High, 21 Medium, 1 Low, 0 Unrated.

CVE-2026-39324

Published Apr 7, 2026

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 secre…

CVSS 9.3 · Critical
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34835

Published Apr 2, 2026

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…

CVSS 4.8 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34827

Published Apr 2, 2026

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::Multipart::Parser#handle_mime_head parses quoted multipar…

CVSS 7.5 · High
evidence mentions
4
Buzz score
29.1
Vendor/product tagsBeta · best-effort

CVE-2026-32762

Published Apr 2, 2026

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::Utils.forwarded_values parses the RFC 7239 Forwarded heade…

CVSS 4.8 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-26962

Published Apr 2, 2026

Rack is a modular Ruby web server interface. From version 3.2.0 to before version 3.2.6, Rack::Multipart::Parser unfolds folded multipart part headers incorrectly. When a multipar…

CVSS 4.8 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34831

Published Apr 2, 2026

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Files#fail sets the Content-Length response header using String#size instead of Str…

CVSS 4.8 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34830

Published Apr 2, 2026

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Sendfile#map_accel_path interpolates the value of the X-Accel-Mapping request heade…

CVSS 5.9 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34829

Published Apr 2, 2026

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Multipart::Parser only wraps the request body in a BoundedIO when CONTENT_LENGTH is…

CVSS 7.5 · High
evidence mentions
4
Buzz score
29.1
Vendor/product tagsBeta · best-effort

CVE-2026-34826

Published Apr 2, 2026

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Utils.get_byte_ranges parses the HTTP Range header without limiting the number of i…

CVSS 5.3 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34786

Published Apr 2, 2026

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Static#applicable_rules evaluates several header_rules types against the raw URL-en…

CVSS 5.3 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34785

Published Apr 2, 2026

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Static determines whether a request should be served as a static file using a simpl…

CVSS 7.5 · High
evidence mentions
4
Buzz score
29.1
Vendor/product tagsBeta · best-effort

CVE-2026-34763

Published Apr 2, 2026

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…

CVSS 5.3 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34230

Published Apr 2, 2026

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Utils.select_best_encoding processes Accept-Encoding values with quadratic time com…

CVSS 5.3 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-26961

Published Apr 2, 2026

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Multipart::Parser extracts the boundary parameter from multipart/form-data using a…

CVSS 3.7 · Low
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-25500

Published Feb 18, 2026

Rack is a modular Ruby web server interface. Prior to versions 2.2.22, 3.1.20, and 3.2.5, `Rack::Directory` generates an HTML directory index where each file entry is rendered as…

CVSS 5.4 · Medium
evidence mentions
2
Buzz score
16.0
Vendor/product tagsBeta · best-effort

CVE-2026-22860

Published Feb 18, 2026

Rack is a modular Ruby web server interface. Prior to versions 2.2.22, 3.1.20, and 3.2.5, `Rack::Directory`’s path check used a string prefix match on the expanded path. A request…

CVSS 7.5 · High
evidence mentions
5
Buzz score
30.9
Vendor/product tagsBeta · best-effort

CVE-2025-61919

Published Oct 10, 2025

Rack is a modular Ruby web server interface. Prior to versions 2.2.20, 3.1.18, and 3.2.3, `Rack::Request#POST` reads the entire request body into memory for `Content-Type: applica…

CVSS 7.5 · High
Vendor/product tagsBeta · best-effort

CVE-2025-61780

Published Oct 10, 2025

Rack is a modular Ruby web server interface. Prior to versions 2.2.20, 3.1.18, and 3.2.3, a possible information disclosure vulnerability existed in `Rack::Sendfile` when running…

CVSS 5.8 · Medium
Vendor/product tagsBeta · best-effort

CVE-2025-61772

Published Oct 7, 2025

Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2, `Rack::Multipart::Parser` can accumulate unbounded data when a multipart part’s header…

CVSS 7.5 · High
Vendor/product tagsBeta · best-effort

CVE-2025-61771

Published Oct 7, 2025

Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2, ``Rack::Multipart::Parser` stores non-file form fields (parts without a `filename`) en…

CVSS 7.5 · High
Vendor/product tagsBeta · best-effort

CVE-2025-61770

Published Oct 7, 2025

Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2, `Rack::Multipart::Parser` buffers the entire multipart preamble (bytes before the firs…

CVSS 7.5 · High
Vendor/product tagsBeta · best-effort

CVE-2025-59830

Published Sep 25, 2025

Rack is a modular Ruby web server interface. Prior to version 2.2.18, Rack::QueryParser enforces its params_limit only for parameters separated by &, while still splitting on both…

CVSS 7.5 · High
Vendor/product tagsBeta · best-effort

CVE-2025-49007

Published Jun 4, 2025

Rack is a modular Ruby web server interface. Starting in version 3.1.0 and prior to version 3.1.16, there is a denial of service vulnerability in the Content-Disposition parsing c…

CVSS 6.6 · Medium
Vendor/product tagsBeta · best-effort

CVE-2025-46727

Published May 7, 2025

Rack is a modular Ruby web server interface. Prior to versions 2.2.14, 3.0.16, and 3.1.14, `Rack::QueryParser` parses query strings and `application/x-www-form-urlencoded` bodies…

CVSS 7.5 · High
Vendor/product tagsBeta · best-effort

CVE-2025-32441

Published May 7, 2025

Rack is a modular Ruby web server interface. Prior to version 2.2.14, when using the `Rack::Session::Pool` middleware, simultaneous rack requests can restore a deleted rack sessio…

CVSS 4.2 · Medium
evidence mentions
3
Buzz score
18.9
Vendor/product tagsBeta · best-effort
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