CVE-2021-22902
HIGHRails 6.0.0-6.0.3.6 and 6.1.0-6.1.3.1 - Denial of Service via Mime Type Parser
Title source: llmDescription
The actionpack ruby gem (a framework for handling and responding to web requests in Rails) before 6.0.3.7, 6.1.3.2 suffers from a possible denial of service vulnerability in the Mime type parser of Action Dispatch. Carefully crafted Accept headers can cause the mime type parser in Action Dispatch to do catastrophic backtracking in the regular expression engine.
References (2)
Core 2
Core References
Permissions Required, Third Party Advisory x_refsource_misc
https://hackerone.com/reports/1138654
Exploit, Mitigation, Patch, Vendor Advisory x_refsource_misc
https://discuss.rubyonrails.org/t/cve-2021-22902-possible-denial-of-service-vulnerability-in-action-dispatch/77866
Scores
CVSS v3
7.5
EPSS
0.0068
EPSS Percentile
71.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-400
Status
published
Products (2)
rubygems/actionpack
6.0.0 - 6.0.3.7RubyGems
rubyonrails/rails
6.0.0 - 6.0.3.7
Published
Jun 11, 2021
Tracked Since
Feb 18, 2026