GHSA-QV7J-4883-HWH7 Rack::Sendfile header-based X-Accel-Mapping regex injection enables unauthorized X-Accel-Redirect

Summary Rack::Sendfilemapaccelpath interpolates the value of the X-Accel-Mapping request header directly into a regular expression when rewriting file paths for X-Accel-Redirect. Because the header value is not escaped, an attacker who can supply X-Accel-Mapping to the backend can inject regex...

Rack::Sendfile header-based X-Accel-Mapping regex injection enables unauthorized X-Accel-Redirect

Summary Rack::Sendfilemapaccelpath interpolates the value of the X-Accel-Mapping request header directly into a regular expression when rewriting file paths for X-Accel-Redirect. Because the header value is not escaped, an attacker who can supply X-Accel-Mapping to the backend can inject regex...

CVE-2026-34830

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Sendfilemapaccelpath interpolates the value of the X-Accel-Mapping request header directly into a regular expression when rewriting file paths for X-Accel-Redirect. Because the header value is not...

DEBIAN-CVE-2026-34830

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Sendfilemapaccelpath interpolates the value of the X-Accel-Mapping request header directly into a regular expression when rewriting file paths for X-Accel-Redirect. Because the header value is not...

CVE-2026-34830

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Sendfilemapaccelpath interpolates the value of the X-Accel-Mapping request header directly into a regular expression when rewriting file paths for X-Accel-Redirect. Because the header value is not...

CVE-2026-34830

CVE-2026-34830 affects Rack, specifically when using Rack::Sendfile#map_accel_path prior to versions 2.2.23, 3.1.21, and 3.2.6. The vulnerability arises because the X-Accel-Mapping header value is interpolated directly into a regular expression without escaping, allowing an attacker that can supp...

CVE-2026-34830 Rack: Rack::Sendfile regex injection via HTTP_X_ACCEL_MAPPING header allows arbitrary file reads through nginx

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Sendfilemapaccelpath interpolates the value of the X-Accel-Mapping request header directly into a regular expression when rewriting file paths for X-Accel-Redirect. Because the header value is not...

CVE-2026-34830 Rack: Rack::Sendfile regex injection via HTTP_X_ACCEL_MAPPING header allows arbitrary file reads through nginx

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Sendfilemapaccelpath interpolates the value of the X-Accel-Mapping request header directly into a regular expression when rewriting file paths for X-Accel-Redirect. Because the header value is not...

PT-2026-29818

Name of the Vulnerable Software and Affected Versions Rack versions prior to 2.2.23, 3.1.21, and 3.2.6 Description Rack’s Rack::Sendfilemap accel path function directly uses the X-Accel-Mapping request header value in a regular expression for rewriting file paths used with X-Accel-Redirect. Becau...

PT-2026-29922

Summary Rack::Sendfilemap accel path interpolates the value of the X-Accel-Mapping request header directly into a regular expression when rewriting file paths for X-Accel-Redirect. Because the header value is not escaped, an attacker who can supply X-Accel-Mapping to the backend can inject regex...

Rack::Sendfile header-based X-Accel-Mapping regex injection enables unauthorized X-Accel-Redirect

Summary Rack::Sendfilemapaccelpath interpolates the value of the X-Accel-Mapping request header directly into a regular expression when rewriting file paths for X-Accel-Redirect. Because the header value is not escaped, an attacker who can supply X-Accel-Mapping to the backend can inject regex...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: rubygem-rack (UTSA-2026-005939)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005939 advisory. Rack is a modular Ruby web server interface. The Rack::Sendfile middleware logs unsanitised header values from the X-Sendfile-Type header. An attacker can exploit th...

Astra Linux – Vulnerability in Ruby-Rack

Rack is a modular Ruby web server interface. The Rack::Sendfile middleware logs unsanitized header values from the X-Sendfile-Type header. An attacker can exploit this by injecting escape sequences such as newline characters into the header, resulting in log injection. This vulnerability has been...

Security Bulletin: Multiple vulnerabilities in IBM Aspera Console

Summary Multiple vulnerabilities were addressed in IBM Aspera Console version 3.4.8. Vulnerability Details CVEID:CVE-2025-61780 DESCRIPTION: 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...

Security update for rubygem-rack

This update for rubygem-rack fixes the following issues: Update to version 2.2.20 bsc1251936 CVE-2025-61919: Fixed application/x-www-form-urlencoded, callingrack.input.readnil without enforcing a length or cap bsc1251936 CVE-2025-61780: Fixed improper handling of headers in Rack::Sendfile allows...

Information Disclosure

rack is vulnerable to Information Disclosure. The vulnerability is due to trusting unvalidated x-sendfile-type and x-accel-mapping headers, allowing attackers to craft headers that trick the proxy into making internal requests and bypassing access controls...

[SECURITY] [DLA 4357-1] ruby-rack security update

----------------------------------------------------------------------- Debian LTS Advisory DLA-4357-1 [email protected] https://www.debian.org/lts/security/ Utkarsh Gupta November 01, 2025 https://wiki.debian.org/LTS -...

Ruby RACK < 2.2.20 / 3.x < 3.1.18 / 3.2 < 3.2.3 Multiple Vulnerabilities

The version of the RACK Ruby library installed on the remote host is prior to 2.2.20 / 3.1.18 / 3.2.3. It is, therefore, affected by the following vulnerabilities: - Rack::RequestPOST reads the entire request body into memory for Content-Type: application/x-www-form-urlencoded, calling...

Linux Distros Unpatched Vulnerability : CVE-2025-61780

"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 2.2.20, 3.1.18, and 3.2.3, a possible information disclosure vulnerability existed in...

CVE-2025-61780

A potential information disclosure vulnerability has been identified in the RubyGem Rack affecting Rack::Sendfile when used behind a proxy that supports x-sendfile headers e.g., Nginx. When processing untrusted x-sendfile-type or x-accel-mapping headers, the middleware could misinterpret them as...