Description
Rack is a modular Ruby web server interface. From versions 3.0.0.beta1 to before 3.1.21 and 3.2.0 to before 3.2.6, Rack::Utils.forwarded_values parses the RFC 7239 Forwarded header by splitting on semicolons before handling quoted-string values. Because quoted values may legally contain semicolons, a header can be interpreted by Rack as multiple Forwarded directives rather than as a single quoted for value. In deployments where an upstream proxy, WAF, or intermediary validates or preserves quoted Forwarded values differently, this discrepancy can allow an attacker to smuggle host, proto, for, or by parameters through a single header value. This issue has been patched in versions 3.1.21 and 3.2.6.
INFO
Published Date :
2026-04-02T17:06:50.819Z
Last Modified :
2026-04-02T17:42:42.305Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2026-32762 vulnerability.
| Vendors | Products |
|---|---|
| Rack |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-32762.
