Path Handling Vulnerability in Cygwin Target of Rust

CVE-2025-11233

What is CVE-2025-11233?

The vulnerability in the Rust programming language affects the Cygwin target (x86_64-pc-cygwin) versions 1.87.0 to 1.88.0. This flaw results from improper handling of path separators within the standard library's Path API. As a consequence, programs that check or manipulate file paths may overlook certain path components represented by backslashes, potentially leading to unexpected behavior such as path traversal attacks or harmful filesystem operations. Rust 1.89.0 corrects this issue by ensuring both Win32 and Unix-style paths are properly processed. It's important to note that this vulnerability is relevant only for users who have compiled the specific Cygwin target from source, as no pre-built binaries are provided.

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