CVE-2021-22942

6.1 mediumEPSS 1.7%

Medium (6.1) in rubyonrails rails. EPSS 1.7% chance of exploitation in the next 30 days. Fixed in actionpack 6.0.4.1, 6.1.4.1.

A possible open redirect vulnerability in the Host Authorization middleware in Action Pack >= 6.0.0 that could allow attackers to redirect users to a malicious website.

Severity

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 1.7% chance of exploitation in the next 30 days; higher than 77% of CVEs (scores of 2026-10-31)
CWE: CWE-601
Published: 2021-10-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

rubyonrails:rails

Packages (OSV)

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-2rqw-v265-jf8c	RubyGems	actionpack	>=6.0.0 <6.0.4.1	6.0.4.1
GHSA-2rqw-v265-jf8c	RubyGems	actionpack	>=6.1.0 <6.1.4.1	6.1.4.1

References

http://www.openwall.com/lists/oss-security/2021/12/14/5
https://security.netapp.com/advisory/ntap-20240202-0005/
https://weblog.rubyonrails.org/2021/8/19/Rails-6-0-4-1-and-6-1-4-1-have-been-released/
https://www.debian.org/security/2023/dsa-5372
http://www.openwall.com/lists/oss-security/2021/12/14/5

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