CVE-2021-22881

2021-02-1116:12:34

CWE-601

hackerone

www.cve.org

cve-2021-22881

host authorization middleware

action pack

open redirect vulnerability

allowed host

leading dot

malicious website

AI Score

6.3

Confidence

High

EPSS

0.002

Percentile

61.0%

JSON

The Host Authorization middleware in Action Pack before 6.1.2.1, 6.0.3.5 suffers from an open redirect vulnerability. Specially crafted Host headers in combination with certain “allowed host” formats can cause the Host Authorization middleware in Action Pack to redirect users to a malicious website. Impacted applications will have allowed hosts with a leading dot. When an allowed host contains a leading dot, a specially crafted Host header can be used to redirect to a malicious website.

CNA Affected

[
  {
    "product": "https://github.com/rails/rails",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Fixed in 6.1.2.1, 6.0.3.5"
      }
    ]
  }
]