CVE-2026-34831

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Filesfail sets the Content-Length response header using Stringsize instead of Stringbytesize. When the response body contains multibyte UTF-8 characters, the declared Content-Length is smaller than the...

CVE-2026-26961 Rack: Multipart Boundary Parsing Ambiguity allowing WAF Bypass

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 greedy regular expression. When a Content-Type header contains multiple boundary parameters, Rack selects the last one...

CVE-2026-34230

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Utils.selectbestencoding processes Accept-Encoding values with quadratic time complexity when the header contains many wildcard entries. Because this method is used by Rack::Deflater to choose a respon...

CVE-2026-34230 Rack: Quadratic complexity in Rack::Utils.select_best_encoding via wildcard Accept-Encoding header

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Utils.selectbestencoding processes Accept-Encoding values with quadratic time complexity when the header contains many wildcard entries. Because this method is used by Rack::Deflater to choose a respon...

CVE-2026-34230

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Utils.selectbestencoding processes Accept-Encoding values with quadratic time complexity when the header contains many wildcard entries. Because this method is used by Rack::Deflater to choose a respon...

Rack 注入漏洞

Rack is a modular Ruby web server interface developed by the Rack open-source project. Versions of Rack from 3.2.0 to 3.2.6 contained an injection vulnerability. This vulnerability stemmed from an error in the multi-part resolver that improperly expanded and folded headers, which could lead to HT...

USN-8066-1: Rack vulnerabilities

Minh Pham Quang discovered that Rack did not correctly handle parsing certain paths, which could lead to a path traversal attack. An attacker could possibly use this issue to leak sensitive information. CVE-2026-22860 Ali Firas discovered that Rack did not correctly sanitize certain inputs. An...

Ruby Rack < 2.2.22 / 3.0.0.beta1 < 3.1.20 / 3.2.0 < 3.2.5 Multiple Vulnerabilities

The version of the Rack Ruby library installed on the remote host is prior to 2.2.22, 3.x prior to 3.1.20, or 3.2.x prior to 3.2.5. It is, therefore, affected by multiple vulnerabilities: - Rack::Directory’s path check used a string prefix match on the expanded path. A request like...

Linux Distros Unpatched Vulnerability : CVE-2026-25500

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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 entr...

Linux Distros Unpatched Vulnerability : CVE-2026-22860

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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 expande...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: pcs (UTSA-2026-005316)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005316 advisory. 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 befo...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: pcs (UTSA-2026-005323)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005323 advisory. 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-urlencod...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: pcs (UTSA-2026-005328)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005328 advisory. Rack is a modular Ruby web server interface. Prior to version 2.2.18, Rack::QueryParser enforces its paramslimit only for parameters separated by &, while still...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: pcs (UTSA-2026-005315)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005315 advisory. Rack is a modular Ruby web server interface. Carefully crafted Range headers can cause a server to respond with an unexpectedly large response. Responding with such...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: pcs (UTSA-2026-005324)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005324 advisory. 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...

K000159600: Rack vulnerability CVE-2022-30123

Security Advisory Description A sequence injection vulnerability exists in Rack 2.0.9.1, 2.1.4.1 and 2.2.3.1 which could allow is a possible shell escape in the Lint and CommonLogger components of Rack. CVE-2022-30123 Impact There is no impact; F5 products are not affected by this vulnerability...

MiracleLinux 7 : pcs-0.9.143-15.el7 (AXSA:2015-718:02)

The remote MiracleLinux 7 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2015-718:02 advisory. pcs is a corosync and pacemaker configuration tool. It permits users to easily view, modify and created pacemaker based clusters. Security issues fixed with...

Astra Linux – Vulnerability in Ruby-Rack

Rack is a modular Ruby web server interface. Before versions 2.2.20, 3.1.18, and 3.2.3, Rack::RequestPOST would read the entire request body into memory when the Content-Type was application/x-www-form-urlencoded. This action did not enforce any length or capacity limits on the input. As a result...

MiracleLinux 8 : pcs-0.10.18-2.el8_10.7.ML.1 (AXSA:2025-11087:08)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-11087:08 advisory. rubygem-rack: Rack QueryParser has an unsafe default allowing paramslimit bypass via semicolon- separated parameters CVE-2025-59830 rack: Rack's...

CVE-2024-39316

Rack is a modular Ruby web server interface. Starting in version 3.1.0 and prior to version 3.1.5, Regular Expression Denial of Service ReDoS vulnerability exists in the Rack::Request::Helpers module when parsing HTTP Accept headers. This vulnerability can be exploited by an attacker sending...