# CVE-2022-24790: HTTP Request Smuggling in puma > Attackers can smuggle HTTP requests through a misconfigured proxy to bypass security controls or access unauthorized data in Puma. - **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 30 Mar 2022 - **Updated:** 23 Apr 2025 - **Also known as:** DEBIAN-CVE-2022-24790, GHSA-h99w-9q5r-gjq9, RHSA-2022:8532, SUSE-SU-2022:3571-1, UBUNTU-CVE-2022-24790, openSUSE-SU-2024:12032-1 ## What is CVE-2022-24790? CVE-2022-24790 is a critical vulnerability in Debian Debian Linux, published on 30 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official 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. Weakness: CWE-444 (Inconsistent Interpretation of HTTP Requests) ## Which versions are affected by CVE-2022-24790? 4 open source packages ship an affected version, including puma. It affects 3 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `puma` | RubyGems | All versions | 4.3.12 | | `puma` | RubyGems | All versions | 4.3.12 | | `puma` | RubyGems | From 5.0.0 | 5.6.4 | | `puma` | RubyGems | From 5.0.0 | 5.6.4 | | `tfm-rubygem-puma` | Red Hat:satellite:6.9::el7 | All versions | 0:4.3.12-1.el7sat | | `tfm-rubygem-puma-debuginfo` | Red Hat:satellite:6.9::el7 | All versions | 0:4.3.12-1.el7sat | | `rubygem-puma` | SUSE:Linux Enterprise High Availability Extension 15 | All versions | 4.3.12-150000.3.9.1 | | `rubygem-puma` | SUSE:Linux Enterprise High Availability Extension 15 SP1 | All versions | 4.3.12-150000.3.9.1 | | `rubygem-puma` | SUSE:Linux Enterprise High Availability Extension 15 SP2 | All versions | 4.3.12-150000.3.9.1 | | `rubygem-puma` | SUSE:Linux Enterprise High Availability Extension 15 SP3 | All versions | 4.3.12-150000.3.9.1 | | `rubygem-puma` | SUSE:Linux Enterprise High Availability Extension 15 SP4 | All versions | 4.3.12-150000.3.9.1 | | `rubygem-puma` | openSUSE:Leap 15.3 | All versions | 4.3.12-150000.3.9.1 | | `rubygem-puma` | openSUSE:Leap 15.4 | All versions | 4.3.12-150000.3.9.1 | | `rubygem-puma-4` | openSUSE:Tumbleweed | All versions | 4.3.12-1.1 | Products: Debian Debian Linux, Fedoraproject Fedora, Puma Puma. ## How do I fix CVE-2022-24790? Upgrade puma to a fixed version for your release line: 4.3.12 or 5.6.4. ## Is CVE-2022-24790 being exploited? There is no known exploitation of CVE-2022-24790 in the wild and no public exploit code. ## Other vulnerabilities in Debian Debian Linux - [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild) - [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild) - [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild) - [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild) - [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2022-24790 and fix it if it is affected. What it is: CVE-2022-24790 is a critical vulnerability in Debian Debian Linux, published on 30 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: There is no known exploitation of CVE-2022-24790 in the wild and no public exploit code. Affected packages and fixed versions: - puma (RubyGems): affected all versions; fixed in 4.3.12 - puma (RubyGems): affected all versions; fixed in 4.3.12 - puma (RubyGems): affected from 5.0.0; fixed in 5.6.4 - puma (RubyGems): affected from 5.0.0; fixed in 5.6.4 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2022-24790/ (Markdown: https://insights.sbomify.com/CVE-2022-24790/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2022-24790 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-24790 - OSV: https://osv.dev/vulnerability/CVE-2022-24790 --- From sbomify Insights: https://insights.sbomify.com/CVE-2022-24790/ Summaries are generated and may contain mistakes; the official description above is the record.