CVE catalog
CVE-2022-23634
puma: CVE-2022-23634
- Severity
- High · CVSS 8
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.11% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | puma | sid | 8.0.2-3 | fixed |
| Debian | puma | forky | 8.0.2-3 | fixed |
| Debian | puma | trixie | 6.6.0-4 | fixed |
| Debian | puma | bookworm | 5.6.5-3+deb12u1 | fixed |
| Debian | puma | bookworm-security | 5.6.5-3+deb12u2 | fixed |
| Ubuntu | puma | pro | 4.3.6-1ubuntu4 | vulnerable |
| Ubuntu | puma | pro | 5.5.2-2ubuntu2 | vulnerable |
| Ubuntu | puma | pro | 5.5.2-2ubuntu2+esm1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | puma | source | sid | 5.6.4-1 | not yet assigned | Not reported | [1005391] |
| Debian | puma | source | forky | 5.6.4-1 | not yet assigned | Not reported | [1005391] |
| Debian | puma | source | trixie | 5.6.4-1 | not yet assigned | Not reported | [1005391] |
| Debian | puma | source | bookworm | 5.6.4-1 | not yet assigned | Not reported | [1005391] |
| Ubuntu | puma | deb | pro | 5.5.2-2ubuntu2+esm1 | Not reported | UBUNTU-CVE-2022-23634 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [puma]Fixed
Details (2)
5.6.5-3+deb12u1· amd64 · bookwormFixed · Fixed:
5.6.4-1dsa · puma · debian · bookworm
5.6.5-3+deb12u1· arm64 · bookwormFixed · Fixed:
5.6.4-1dsa · puma · debian · bookworm
Observed:
References
- [https://access.redhat.com/errata/RHSA-2022:5498]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2022_1515-1.json]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2022-23634]
- [https://security-tracker.debian.org/tracker/CVE-2022-23634]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]