# CVE-2021-22959: Node.js 14 and 2 others: HTTP Request Smuggling (CWE-444)

CVE-2021-22959 is fixed in 15 products on 2 platforms, first by Node.js 12 12.22.7, released October 12, 2021. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-22959
- Priority: High
- CVSS: 9.8 (Moderate)
- EPSS: 0.0316
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 15, 2021
- Weakness: CWE-444: HTTP Request Smuggling (CWE-444)
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2021-22959

## Description

The parser in accepts requests with a space (SP) right after the header name before the colon. This can lead to HTTP Request Smuggling (HRS) in llhttp < v2.1.4 and < v6.0.6.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Node.js 12 | 12.22.7 | [Node.js 12 12.22.7](https://patchblox.com/security/data/fix/windows-app/openjs.nodejs.12-12.22.7.md) | Oct 12, 2021 |
| Windows apps | Node.js 14 | 14.18.1 | [Node.js 14 14.18.1](https://patchblox.com/security/data/fix/windows-app/openjs.nodejs.14-14.18.1.md) | Oct 12, 2021 |
| Windows apps | Node.js 16 | 16.11.1 | [Node.js 16 16.11.1](https://patchblox.com/security/data/fix/windows-app/openjs.nodejs.16-16.11.1.md) | Oct 12, 2021 |
| Linux | nodejs Debian 11.6 (bullseye) | 12.22.12~dfsg-1~deb11u1 | [DSA-5170-1](https://patchblox.com/security/data/fix/linux/dsa-5170-1.md) | Jun 27, 2022 |
| Linux | nodejs Debian 12.15 (bookworm) | 12.22.7~dfsg-1 | [DEBIAN-CVE-2021-22959](https://patchblox.com/security/data/fix/linux/debian-cve-2021-22959.md) | Nov 15, 2021 |
| Linux | nodejs Debian 13.5 (trixie) | 12.22.7~dfsg-1 | [DEBIAN-CVE-2021-22959](https://patchblox.com/security/data/fix/linux/debian-cve-2021-22959.md) | Nov 15, 2021 |
| Linux | nodejs Debian 14 | 12.22.7~dfsg-1 | [DEBIAN-CVE-2021-22959](https://patchblox.com/security/data/fix/linux/debian-cve-2021-22959.md) | Nov 15, 2021 |
| Linux | nodejs RHEL 8 | 1:14.18.2-2.module+el8.5.0+13644+8d46dafd | [RHSA-2022:0350](https://patchblox.com/security/data/fix/linux/rhsa-2022-0350.md) | Feb 1, 2022 |
| Linux | nodejs almalinux 8 | 1:14.18.2-2.module_el8.5.0+2618+8d46dafd | [ALSA-2022:0350](https://patchblox.com/security/data/fix/linux/alsa-2022-0350.md) | Feb 1, 2022 |
| Linux | nodejs amzn 2023 | 1:18.12.1-1.amzn2023.0.2 | [ALAS2023-2023-084](https://patchblox.com/security/data/fix/linux/alas2023-2023-084.md) | Feb 17, 2023 |
| Linux | nodejs ol 8 | 1:16.13.1-3.0.1.module+el8.5.0+20457+52828f44 | [ELSA-2021-5171](https://patchblox.com/security/data/fix/linux/elsa-2021-5171.md) | Dec 16, 2021 |
| Linux | nodejs rocky 8 | 1:14.18.2-2.module+el8.5.0+733+de4fee6c | [RLSA-2022:0350](https://patchblox.com/security/data/fix/linux/rlsa-2022-0350.md) | Feb 1, 2022 |
| Linux | nodejs-debuginfo amzn 2023 | 1:18.12.1-1.amzn2023.0.2 | [ALAS2023-2023-084](https://patchblox.com/security/data/fix/linux/alas2023-2023-084.md) | Feb 17, 2023 |
| Linux | nodejs-debugsource amzn 2023 | 1:18.12.1-1.amzn2023.0.2 | [ALAS2023-2023-084](https://patchblox.com/security/data/fix/linux/alas2023-2023-084.md) | Feb 17, 2023 |
| Linux | nodejs-devel RHEL 8 | 1:14.18.2-2.module+el8.5.0+13644+8d46dafd | [RHSA-2022:0350](https://patchblox.com/security/data/fix/linux/rhsa-2022-0350.md) | Feb 1, 2022 |
| Linux | nodejs-devel almalinux 8 | 1:14.18.2-2.module_el8.5.0+2618+8d46dafd | [ALSA-2022:0350](https://patchblox.com/security/data/fix/linux/alsa-2022-0350.md) | Feb 1, 2022 |
| Linux | nodejs-devel amzn 2023 | 1:18.12.1-1.amzn2023.0.2 | [ALAS2023-2023-084](https://patchblox.com/security/data/fix/linux/alas2023-2023-084.md) | Feb 17, 2023 |
| Linux | nodejs-devel ol 8 | 1:16.13.1-3.0.1.module+el8.5.0+20457+52828f44 | [ELSA-2021-5171](https://patchblox.com/security/data/fix/linux/elsa-2021-5171.md) | Dec 16, 2021 |
| Linux | nodejs-docs RHEL 8 | 1:14.18.2-2.module+el8.5.0+13644+8d46dafd | [RHSA-2022:0350](https://patchblox.com/security/data/fix/linux/rhsa-2022-0350.md) | Feb 1, 2022 |
| Linux | nodejs-docs almalinux 8 | 1:14.18.2-2.module_el8.5.0+2618+8d46dafd | [ALSA-2022:0350](https://patchblox.com/security/data/fix/linux/alsa-2022-0350.md) | Feb 1, 2022 |
| Linux | nodejs-docs amzn 2023 | 1:18.12.1-1.amzn2023.0.2 | [ALAS2023-2023-084](https://patchblox.com/security/data/fix/linux/alas2023-2023-084.md) | Feb 17, 2023 |
| Linux | nodejs-docs ol 8 | 1:16.13.1-3.0.1.module+el8.5.0+20457+52828f44 | [ELSA-2021-5171](https://patchblox.com/security/data/fix/linux/elsa-2021-5171.md) | Dec 16, 2021 |
| Linux | nodejs-full-i18n RHEL 8 | 1:14.18.2-2.module+el8.5.0+13644+8d46dafd | [RHSA-2022:0350](https://patchblox.com/security/data/fix/linux/rhsa-2022-0350.md) | Feb 1, 2022 |
| Linux | nodejs-full-i18n almalinux 8 | 1:14.18.2-2.module_el8.5.0+2618+8d46dafd | [ALSA-2022:0350](https://patchblox.com/security/data/fix/linux/alsa-2022-0350.md) | Feb 1, 2022 |
| Linux | nodejs-full-i18n amzn 2023 | 1:18.12.1-1.amzn2023.0.2 | [ALAS2023-2023-084](https://patchblox.com/security/data/fix/linux/alas2023-2023-084.md) | Feb 17, 2023 |
| Linux | nodejs-full-i18n ol 8 | 1:16.13.1-3.0.1.module+el8.5.0+20457+52828f44 | [ELSA-2021-5171](https://patchblox.com/security/data/fix/linux/elsa-2021-5171.md) | Dec 16, 2021 |
| Linux | nodejs-libs amzn 2023 | 1:18.12.1-1.amzn2023.0.2 | [ALAS2023-2023-084](https://patchblox.com/security/data/fix/linux/alas2023-2023-084.md) | Feb 17, 2023 |
| Linux | nodejs-libs-debuginfo amzn 2023 | 1:18.12.1-1.amzn2023.0.2 | [ALAS2023-2023-084](https://patchblox.com/security/data/fix/linux/alas2023-2023-084.md) | Feb 17, 2023 |
| Linux | nodejs-nodemon RHEL 8 | 0:2.0.15-1.module+el8.5.0+13504+a2e74d91 | [RHSA-2022:0350](https://patchblox.com/security/data/fix/linux/rhsa-2022-0350.md) | Feb 1, 2022 |
| Linux | nodejs-nodemon almalinux 8 | 2.0.15-1.module_el8.6.0+2904+f21ad6f4 | [ALSA-2022:0350](https://patchblox.com/security/data/fix/linux/alsa-2022-0350.md) | Feb 1, 2022 |
| Linux | nodejs-nodemon ol 8 | 0:2.0.15-1.module+el8.5.0+20457+52828f44 | [ELSA-2021-5171](https://patchblox.com/security/data/fix/linux/elsa-2021-5171.md) | Dec 16, 2021 |
| Linux | nodejs-nodemon rocky 8 | 0:2.0.15-1.module+el8.5.0+721+4c107270 | [RLSA-2022:0350](https://patchblox.com/security/data/fix/linux/rlsa-2022-0350.md) | Feb 1, 2022 |
| Linux | nodejs-packaging RHEL 8 | 0:23-3.module+el8.3.0+6519+9f98ed83 | [RHSA-2022:0350](https://patchblox.com/security/data/fix/linux/rhsa-2022-0350.md) | Feb 1, 2022 |
| Linux | nodejs-packaging almalinux 8 | 23-3.module_el8.5.0+2618+8d46dafd | [ALSA-2022:0350](https://patchblox.com/security/data/fix/linux/alsa-2022-0350.md) | Feb 1, 2022 |
| Linux | nodejs-packaging ol 8 | 0:25-1.module+el8.5.0+20388+4b61e68d | [ELSA-2021-5171](https://patchblox.com/security/data/fix/linux/elsa-2021-5171.md) | Dec 16, 2021 |
| Linux | nodejs-packaging rocky 8 | 0:23-3.module+el8.7.0+1071+4bdda2a8 | [RLSA-2022:0350](https://patchblox.com/security/data/fix/linux/rlsa-2022-0350.md) | Feb 1, 2022 |
| Linux | npm RHEL 8 | 1:6.14.15-1.14.18.2.2.module+el8.5.0+13644+8d46dafd | [RHSA-2022:0350](https://patchblox.com/security/data/fix/linux/rhsa-2022-0350.md) | Feb 1, 2022 |
| Linux | npm almalinux 8 | 1:6.14.15-1.14.18.2.2.module_el8.5.0+2618+8d46dafd | [ALSA-2022:0350](https://patchblox.com/security/data/fix/linux/alsa-2022-0350.md) | Feb 1, 2022 |
| Linux | npm amzn 2023 | 1:8.19.2-1.18.12.1.1.amzn2023.0.2 | [ALAS2023-2023-084](https://patchblox.com/security/data/fix/linux/alas2023-2023-084.md) | Feb 17, 2023 |
| Linux | npm ol 8 | 1:8.1.2-1.16.13.1.3.0.1.module+el8.5.0+20457+52828f44 | [ELSA-2021-5171](https://patchblox.com/security/data/fix/linux/elsa-2021-5171.md) | Dec 16, 2021 |
| Linux | v8-devel amzn 2023 | 2:10.2.154.15-1.18.12.1.1.amzn2023.0.2 | [ALAS2023-2023-084](https://patchblox.com/security/data/fix/linux/alas2023-2023-084.md) | Feb 17, 2023 |

---

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