CVE-2022-24790HTTP Request Smuggling in puma
- 9.1CriticalCVSS base score
- 2.2%Exploitation in 30 daysEPSS · top 17% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Puma is a simple, fast, multi-threaded, parallel HTTP 1.1 server for Ruby/Rack applications. When using Puma behind a proxy that does not properly validate that the incoming HTTP request matches the RFC7230 standard, Puma and the frontend proxy may disagree on where a request starts and ends. This would allow requests to be smuggled via the front-end proxy to Puma. The vulnerability has been fixed in 5.6.4 and 4.3.12. Users are advised to upgrade as soon as possible. Workaround: when deploying a proxy in front of Puma, turning on any and all functionality to make sure that the request matches the RFC7230 standard.
Timeline
ID reserved
By GitHub_M
- 48 days later
· 48 days later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 2.2% · top 17% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- RubyGemspumaGHSA-h99w-9q5r-gjq9 (opens in a new tab)
References
References8
- https://github.com/puma/puma/security/advisories/GHSA-h99w-9q5r-gjq9 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/puma/puma/commit/5bb7d202e24dec00a898dca4aa11db391d7787a5 (opens in a new tab)x_refsource_MISCx_transferred
- DSA-5146 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- GLSA-202208-28 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- [debian-lts-announce] 20220827 [SECURITY] [DLA 3083-1] puma security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2022-de968d1b6c (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2022-52d0032596 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2022-7c8b29195f (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-1439 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-h99w-9q5r-gjq9 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2022-24790)Record last updated .