CVE-2026-66066-POC

CVE-2026-66066 の PoC - 最小構成の標準 Rails/libvips ラボ このリポジトリは、GHSA-xr9x-r78c-5hrm で説明されている Rails Active Storage のファイル読み取りから RCE に至るチェーンを、影響を受ける最新の Rails 8.1 リリースである Rails 8.1.3 に対して再現します。Rails 8.1.3.1 が修正済みのコントロールです。 ここで説明する使い捨てのローカルラボでのみ使用してください。HTTP ドライバは非ループバックターゲットを拒否します（ただし、他のターゲットに対する許可されたテスト用に...

KindaRails2Shell

KindaRails2Shell：CVE-2026-66066 一个零依赖、单文件的 PoC（概念验证）以及仅限环回地址的 Docker 实验环境，针对 Rails Active Storage/libvips 任意文件读取漏洞。它还演示了安全公告中所述的、从恢复的 secretkeybase 到伪造图像变体并执行命令的条件式提权。 受影响版本：Rails 7.2.0–7.2.3.1、8.0.0–8.0.5 和 8.1.0–8.1.3 已修复版本：Rails 7.2.3.2、8.0.5.1 和 8.1.3.1 运行环境：Python 3.11+，仅使用标准库 适用范围：授权测试与本地研究...

CVE-2026-66066

CVE-2026-66066 — KindaRails2Shell Ruby on Rails の Active Storage + libvips の任意ファイル読み取り → 条件付きリモートコード実行（RCE）PoC ツール。 単一ファイル、Python 3.11+ 純標準ライブラリのみ・依存ゼロ 。MAT/HDF5 ハイブリッドペイロード、純 Python PNG ピクセルデコーダー、オフセット読み取り、キーリカバリ、RCE、スキャンモードを内蔵。 脆弱性の概要 Rails はクライアントが自己申告する contenttype（直接アップロードエンドポイント）を信頼し、libvip...

Astra Linux – Vulnerability in Rails

Active Storage allows users to attach cloud and local files in Rails applications. Before versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Storage’s DiskServicedeleteprefixed method passed blob keys directly to Dir.glob, without escaping the glob metacharacters. If a blob key contains...

Astra Linux – Vulnerability in Rails

Active Storage allows users to attach cloud and local files in Rails applications. Before versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Storage’s DiskServicepathfor method did not validate that the resolved filesystem path remained within the storage root directory. If a blob key containing path...

rails-forensics-CVE-2026-66066

rails-forensics-CVE-2026-66066 Tooling and method for answering two questions about a Rails application and CVE-2026-66066, the Active Storage and libvips arbitrary file read known as KindaRails2Shell: 1. Was I vulnerable, and for how long? 2. Was I exploited, and if so, what left the building? T...

The vulnerability affects the libvips image processing library in the Active Storage component of the Ruby on Rails software framework. This allows attackers to execute arbitrary code and gain unauthorized access to protected information.

The vulnerability of the libvips image processing library, a component of the Active Storage framework in the Ruby on Rails software platform, relates to insecure resource initialization. Exploiting this vulnerability could allow an attacker to execute arbitrary code remotely and gain unauthorize...

Rails Active Storage Has A Possible DoS Vulnerability In Proxy Mode Via Multi-range Requests

Impact Active Storage's proxy controller does not limit the number of byte ranges in an HTTP Range header. A request with thousands of small ranges causes disproportionate CPU usage compared to a normal request for the same file, possibly resulting in a DoS vulnerability. Releases The fixed...

Linux Distros Unpatched Vulnerability : CVE-2026-33658

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

CVE-2026-33658

Ruby on Rails Active Storage is affected by a DoS vulnerability in the proxy mode where the HTTP Range header can include thousands of small ranges, causing disproportionate CPU usage. This impacts Rails applications using Active Storage prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1. A patch ha...

CVE-2026-33658 Rails Active Storage has a possible DoS vulnerability in proxy mode via multi-range requests

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 proxy controller does not limit the number of byte ranges in an HTTP Range header. A request with thousands of small ranges causes disproportionate C...

Rails Active Storage has a possible DoS vulnerability in proxy mode via multi-range requests

Impact Active Storage's proxy controller does not limit the number of byte ranges in an HTTP Range header. A request with thousands of small ranges causes disproportionate CPU usage compared to a normal request for the same file, possibly resulting in a DoS vulnerability. Releases The fixed...

GHSA-P9FM-F462-GGRG Rails Active Storage has a possible DoS vulnerability in proxy mode via multi-range requests

Impact Active Storage's proxy controller does not limit the number of byte ranges in an HTTP Range header. A request with thousands of small ranges causes disproportionate CPU usage compared to a normal request for the same file, possibly resulting in a DoS vulnerability. Releases The fixed...

Linux Distros Unpatched Vulnerability : CVE-2026-33202

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

Linux Distros Unpatched Vulnerability : CVE-2026-33174

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

CVE-2026-33173

A flaw was found in Rails Active Storage. A remote attacker, acting as a direct-upload client, can exploit this vulnerability by manipulating metadata during file uploads. By setting internal flags, the attacker can bypass the system's automatic MIME Multipurpose Internet Mail Extensions type...

CVE-2026-33174

A flaw was found in Rails Active Storage. A remote attacker can exploit this vulnerability by sending a request with a large or unbounded Range header, such as bytes=0-, when files are served through Active Storage's proxy delivery mode. This action can cause the server to allocate memory...

CVE-2026-33202

CVE-2026-33202 (Rails Active Storage) : The DiskService#delete_prefixed path in Active Storage passes blob keys directly to Dir.glob without escaping glob metacharacters. If attacker-controlled blob keys include characters like * or ?, an attacker could delete unintended files in the storage dire...

CVE-2026-33202 Rails Active Storage has possible glob injection in its DiskService

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 DiskServicedeleteprefixed passes blob keys directly to Dir.glob without escaping glob metacharacters. If a blob key contains attacker-controlled inp...

CVE-2026-33195 Rails Active Storage has possible Path Traversal in DiskService

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 DiskServicepathfor does not validate that the resolved filesystem path remains within the storage root directory. If a blob key containing path...