Open Redirect in Rubyonrails Rails
CVE-2021-44528
A open redirect vulnerability exists in Action Pack >= 6.0.0 that could allow an attacker to craft a "X-Forwarded-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.
Vulnerability class: Open Redirect
EPSS: 0.042 (89.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Rubyonrails Rails — versions 6.0.4.2, 6.1.4.2, 7.0.0
- N/a Https://github.com/rails/rails — versions 6.1.4.2, 6.0.4.2, 7.0.0.rc2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support@hackerone.com (Patch, Third Party Advisory)
- support@hackerone.com (vendor-advisory)
- support@hackerone.com
Frequently asked questions
- What is CVE-2021-44528?
- CVE-2021-44528 is a medium-severity vulnerability in Rubyonrails Rails, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2022-01-10.
- How severe is CVE-2021-44528?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2021-44528 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.