# CVE-2021-39241: haproxy: An issue was discovered in HAProxy 2.0 before 2.0.24, 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3

CVE-2021-39241 is fixed in 2 products on 1 platform, first by haproxy 2.0.13-2ubuntu0.2, released August 17, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-39241
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0169
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 17, 2021

## Description

An issue was discovered in HAProxy 2.0 before 2.0.24, 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. An HTTP method name may contain a space followed by the name of a protected resource. It is possible that a server would interpret this as a request for that protected resource, such as in the "GET /admin? HTTP/1.1 /static/images HTTP/1.1" example.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | haproxy Ubuntu 20.04 LTS (focal) | 2.0.13-2ubuntu0.2 | [haproxy 2.0.13-2ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-haproxy-2.0.13-2ubuntu0.2.md) | Aug 17, 2021 |
| Linux | vim-haproxy Ubuntu 20.04 LTS (focal) | 2.0.13-2ubuntu0.2 | [vim-haproxy 2.0.13-2ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-vim-haproxy-2.0.13-2ubuntu0.2.md) | Aug 17, 2021 |

---

Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.