🛡️ CVE-2022-23634
🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-200 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
CWE CWE-200
Public Exploit ✅ No
Source NVD
Published 2022-02-11
Updated 2026-06-15
Modified 2024-11-21

Affected Packages

Software From version Fixed in
debian-linux — —
fedora — —
puma — 4.3.11
rails 7.0.0 7.0.2.2

References

Mitigation, Not Applicable, Third Party Advisory https://github.com/advisories/GHSA-wh98-p28r-vrc9
Mitigation, Not Applicable, Third Party Advisory https://github.com/advisories/GHSA-wh98-p28r-vrc9

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