USN-8190-2: Rack::Session vulnerability

USN-8190-1 fixed a vulnerability in Rack::Session. This update provides the corresponding update for Ubuntu 26.04 LTS. Original advisory details: SeungMyung Lee discovered that Rack::Session did not properly reject cookies upon decryption failure. A remote attacker could use this issue to...

OPENSUSE-SU-2026:10604-1 ruby4.0-rubygem-rack-session-2.1.2-1.1 on GA media

These are all security issues fixed in the ruby4.0-rubygem-rack-session-2.1.2-1.1 package on the GA media of openSUSE Tumbleweed...

Ubuntu 25.10 : Rack::Session vulnerability (USN-8190-1)

The remote Ubuntu 25.10 host has a package installed that is affected by a vulnerability as referenced in the USN-8190-1 advisory. SeungMyung Lee discovered that Rack::Session did not properly reject cookies upon decryption failure. A remote attacker could use this issue to manipulate session...

USN-8190-1 ruby-rack-session vulnerability

SeungMyung Lee discovered that Rack::Session did not properly reject cookies upon decryption failure. A remote attacker could use this issue to manipulate session contents and possibly gain unauthorized access...

USN-8190-1: Rack::Session vulnerability

SeungMyung Lee discovered that Rack::Session did not properly reject cookies upon decryption failure. A remote attacker could use this issue to manipulate session contents and possibly gain unauthorized access...

USN-8182-1: Rack vulnerabilities

Andrew Lacambra discovered that Rack did not properly parse certain regular expressions. An attacker could possibly use this issue to bypass network security filters. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 25.10. CVE-2026-26961 William T. Nelson...

ROS-20260417-73-0027

Vulnerability in rubygem-rack related to failure to take measures to protect the structure of a web page. Exploitation of the vulnerability could allow an attacker acting remotely to execute arbitrary code...

Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 : Rack vulnerabilities (USN-8182-1)

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8182-1 advisory. Andrew Lacambra discovered that Rack did not properly parse certain regular...

ROS-20260417-73-0028

Vulnerability in rubygem-rack related to incorrect path name restriction to a restricted directory. Exploitation of the vulnerability may allow a remote attacker to gain unauthorized access to protected information...

Security Bulletin: Multiple vulnerabilities in IBM Aspera Console

Summary Multiple vulnerabilities were addressed in IBM Aspera Console version 3.4.10 Vulnerability Details CVEID:CVE-2026-26961 DESCRIPTION: 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...

Ruby Rack < 2.2.23 / 3.0.x < 3.1.21 / 3.2 < 3.2.6 Multiple Vulnerabilities

The version of the Rack Ruby library installed on the remote host is prior to 2.2.23, prior to 3.1.21, or prior to 3.2.6. It is, therefore, affected by multiple vulnerabilities: - Rack::Utils.getbyteranges parses HTTP Range header without limiting the number of individual byte ranges, leading to...

Ruby Rack 3.2.x < 3.2.6 Header Injection Vulnerability

The version of the Rack Ruby library installed on the remote host is 3.2.0 or later but prior to 3.2.6. It is, therefore, affected by a header injection vulnerability: - Rack::Multipart::Parser unfolds folded multipart part headers incorrectly, preserving embedded CRLF in parsed parameter values...

SUSE CVE-2026-39324

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 decoder instead of rejecting the cookie...

CVE-2026-39324

A flaw was found in Rack::Session. When configured with secrets, the Rack::Session::Cookie component incorrectly handles decryption failures. This allows an unauthenticated attacker to provide a specially crafted session cookie that is accepted as valid, even without knowledge of the configured...

Not Failing Securely ('Failing Open')

Overview rack-session is a session implementation for Rack. Affected versions of this package are vulnerable to Not Failing Securely 'Failing Open' in the Rack::Session::Cookie function when it is configured with the secrets: option. An attacker can gain unauthorized access or escalate privileges...

GHSA-33QG-7WPP-89CQ Rack::Session::Cookie secrets: decrypt failure fallback enables secretless session forgery and Marshal deserialization

Rack::Session::Cookie incorrectly handles decryption failures when configured with secrets:. If cookie decryption fails, the implementation falls back to a default decoder instead of rejecting the cookie. This allows an unauthenticated attacker to supply a crafted session cookie that is accepted ...

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

Rack::Session::Cookie incorrectly handles decryption failures when configured with secrets:. If cookie decryption fails, the implementation falls back to a default decoder instead of rejecting the cookie. This allows an unauthenticated attacker to supply a crafted session cookie that is accepted ...

OPENSUSE-SU-2026:10508-1 ruby4.0-rubygem-rack-2.2-2.2.23-1.1 on GA media

These are all security issues fixed in the ruby4.0-rubygem-rack-2.2-2.2.23-1.1 package on the GA media of openSUSE Tumbleweed...

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

'Rack::Session::Cookie incorrectly handles decryption failures when configured with secrets:. If cookie decryption fails, the implementation falls back to a default decoder instead of rejecting the cookie. This allows an unauthenticated attacker to supply a crafted session cookie that is accepted...

CVE-2026-39324

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 decoder instead of rejecting the cookie...