Rubyonrails vulnerabilities
We track 12 vulnerabilities in Rubyonrails products across 4 products. 12 are rated high or critical, and 3 have been exploited in real attacks. The most recent was published on November 4, 2026.
Latest Rubyonrails vulnerabilities
- 9.8 Critical severity
Active Storage: Initialization of a Resource with an Insecure Default
The activestorage gem before 8.1.4.1 for Ruby on Rails, when ImageMagick attachment processing occurs, can allow server read and write operations (e.g., reading secret_key_base) because the ImageMagick analyzer runs when a file is attached, and there is not an
- 9.1 Critical severity
activestorage: Improper Neutralization of Special Elements in Output Used by a Downstream Component
Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Storage's `DiskService#delete_prefixed` passes blob keys directly to `Dir.glob` without escaping glob metacharacters. If
- 9.8 Critical severity
activestorage: Improper Limitation of a Pathname to a Restricted Directory
Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Storage's `DiskService#path_for` does not validate that the resolved filesystem path remains within the storage root dire
- 7.5 High severity
activesupport: Uncontrolled Resource Consumption
Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Support number helpers accept strings containing scientific notation (e.g. `1e10000`), which `
- 7.5 High severity
activestorage: Memory Allocation with Excessive Size Value
Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, when serving files through Active Storage's proxy delivery mode, the proxy controller loads the entire requested byte range into
- 7.5 High severity
https://github.com/rails/globalid: Inefficient Regular Expression Complexity
A ReDoS based DoS vulnerability in the GlobalID <1.0.1 which could allow an attacker supplying a carefully crafted input can cause the regular expression engine to take an unexpected amount of time. All users running an affected release should either upgrade o
- 7.5 High severity
https://github.com/rails/rails: Inefficient Regular Expression Complexity
A regular expression based DoS vulnerability in Action Dispatch <6.1.7.1 and <7.0.4.1 related to the If-None-Match header. A specially crafted HTTP If-None-Match header can cause the regular expression engine to enter a state of catastrophic backtracking, when
- 7.5 High severity
https://github.com/rails/rails: Inefficient Regular Expression Complexity
A regular expression based DoS vulnerability in Action Dispatch <6.0.6.1,< 6.1.7.1, and <7.0.4.1. Specially crafted cookies, in combination with a specially crafted X_FORWARDED_HOST header can cause the regular expression engine to enter a state of catastrophi
- 7.5 High severity
rails-html-sanitizer: Inefficient Regular Expression Complexity
rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Certain configurations of rails-html-sanitizer < 1.4.4 use an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize cert
- 7.5 High severity
Rails Ruby on Rails Path Traversal Exploited
There is a File Content Disclosure vulnerability in Action View <5.2.2.1, <5.1.6.2, <5.0.7.2, <4.2.11.1 and v3 where specially crafted accept headers can cause contents of arbitrary files on the target system's filesystem to be exposed.
- 7.5 High severity
Ruby on Rails Directory Traversal Exploited
Directory traversal vulnerability in Action View in Ruby on Rails before 3.2.22.1, 4.0.x and 4.1.x before 4.1.14.1, 4.2.x before 4.2.5.1, and 5.x before 5.0.0.beta1.1 allows remote attackers to read arbitrary files by leveraging an application's unrestricted u
- 7.5 High severity
Ruby on Rails Directory Traversal Exploited
Directory traversal vulnerability in actionpack/lib/abstract_controller/base.rb in the implicit-render implementation in Ruby on Rails before 3.2.18, 4.0.x before 4.0.5, and 4.1.x before 4.1.1, when certain route globbing configurations are enabled, allows rem