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CVE-2022-24790

26
FAUCET Score

CVE-2022-24790 describes a request smuggling vulnerability in Puma, a Ruby/Rack HTTP server, when used behind a misconfigured proxy. This flaw allows attackers to bypass the frontend proxy and send malicious requests directly to Puma, affecting various Linux distributions and Puma versions. With a CVSS score of 7.5 (HIGH), the vulnerability is network-exploitable with low complexity, potentially leading to high integrity impacts without requiring user interaction. While there is no evidence of active exploitation, publicly available exploit code, or significant community discussion, immediate upgrades to Puma versions 5.6.4 or 4.3.12 are recommended.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.3.12CPE matchmatch criteria
cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:*
>= 5.0.0, < 5.6.4CPE matchmatch criteria
cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
35CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.14%
Probability of exploitation in next 30 days
EPSS Percentile
80.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0214 is in the 65th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.5 for RHEL 7Fixed in: rubygem-puma-0:4.3.12-1.el7rhgs
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.9 for RHEL 7Fixed in: tfm-rubygem-puma-0:4.3.12-1.el7sat
View patch
rubygemspatch availablevia ghsa
Product: pumaFixed in: 5.6.4
rubygemspatch availablevia ghsa
Product: pumaFixed in: 4.3.12
redhatno patchvia redhat_api
Product: Red Hat Satellite 6Fixed in: tfm-rubygem-puma-plugin-systemd
redhatend of lifevia redhat_api
Product: CloudForms Management Engine 5Fixed in: rubygem-puma

Vendor Advisories (2)

rubygemsGHSA-h99w-9q5r-gjq9critical

Puma vulnerable to HTTP Request Smuggling

Mar 30, 2022
redhatCVE-2022-24790Important

puma-5.6.4: http request smuggling vulnerabilities

Mar 30, 2022

References

github.com / puma/puma/commit/5bb7d202e24dec00a898dca4aa11db391d7787a5
PatchThird Party Advisory
github.com / puma/puma/security/advisories/GHSA-h99w-9q5r-gjq9
Issue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2022/08/msg00015.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43G
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIB
security.gentoo.org / glsa/202208-28
Third Party Advisory
debian.org / security/2022/dsa-5146
Third Party Advisory