CVE-2022-23634
HIGHPuma < 4.3.11 - Information Disclosure
Title source: ruleDescription
Puma is a Ruby/Rack web server built for parallelism. Prior to `puma` version `5.6.2`, `puma` may not always call `close` on the response body. Rails, prior to version `7.0.2.2`, depended on the response body being closed in order for its `CurrentAttributes` implementation to work correctly. The combination of these two behaviors (Puma not closing the body + Rails' Executor implementation) causes information leakage. This problem is fixed in Puma versions 5.6.2 and 4.3.11. This problem is fixed in Rails versions 7.02.2, 6.1.4.6, 6.0.4.6, and 5.2.6.2. Upgrading to a patched Rails _or_ Puma version fixes the vulnerability.
Scores
CVSS v3
8.0
EPSS
0.0044
EPSS Percentile
62.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Classification
CWE
CWE-200
CWE-404
Status
published
Affected Products (9)
puma/puma
< 4.3.11
rubyonrails/rails
< 5.2.6.2
debian/debian_linux
debian/debian_linux
debian/debian_linux
fedoraproject/fedora
fedoraproject/fedora
fedoraproject/fedora
rubygems/puma
< 5.6.2RubyGems
Timeline
Published
Feb 11, 2022
Tracked Since
Feb 18, 2026