Description
Rack is a modular Ruby web server interface. Prior to versions 2.2.20, 3.1.18, and 3.2.3, `Rack::Request#POST` reads the entire request body into memory for `Content-Type: application/x-www-form-urlencoded`, calling `rack.input.read(nil)` without enforcing a length or cap. Large request bodies can therefore be buffered completely into process memory before parsing, leading to denial of service (DoS) through memory exhaustion. Users should upgrade to Rack version 2.2.20, 3.1.18, or 3.2.3, anu of which enforces form parameter limits using `query_parser.bytesize_limit`, preventing unbounded reads of `application/x-www-form-urlencoded` bodies. Additionally, enforce strict maximum body size at the proxy or web server layer (e.g., Nginx `client_max_body_size`, Apache `LimitRequestBody`).
INFO
Published Date :
2025-10-10T19:22:42.454Z
Last Modified :
2025-10-10T20:48:20.240Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2025-61919 vulnerability.
| Vendors | Products |
|---|---|
| Rack |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2025-61919.
