CVE-2022-35256
MEDIUMCVSS 6.5/10EPSS 2.59%
Last modified
CVE-2022-35256 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. The llhttp parser in the http module in Node v18.7.0 does not correctly handle header fields that are not terminated with CLRF. This may result in HTTP Request Smuggling.. EPSS estimates a 2.59% chance of exploitation in the next 30 days.
Description
The llhttp parser in the http module in Node v18.7.0 does not correctly handle header fields that are not terminated with CLRF. This may result in HTTP Request Smuggling.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nodejs | Node.Js | >= 14.0.0, <= 14.14.0 |
| Nodejs | Node.Js | >= 14.15.0, < 14.20.1 |
| Nodejs | Node.Js | >= 16.0.0, <= 16.12.0 |
| Nodejs | Node.Js | >= 16.13.0, < 16.17.1 |
| Nodejs | Node.Js | >= 18.0.0, < 18.9.1 |
| Llhttp | Llhttp | < 6.0.10 |
| Siemens | Sinec Ins | < 1.0 |
| Siemens | Sinec Ins | 1.0 |
| Debian | Debian Linux | 11.0 |
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-332410.pdfThird Party Advisory
- https://hackerone.com/reports/1675191Exploit, Issue Tracking, Third Party Advisory
- https://www.debian.org/security/2023/dsa-5326Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-332410.pdfThird Party Advisory
- https://hackerone.com/reports/1675191Exploit, Issue Tracking, Third Party Advisory
- https://www.debian.org/security/2023/dsa-5326Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2022-35256?
The llhttp parser in the http module in Node v18.7.0 does not correctly handle header fields that are not terminated with CLRF. This may result in HTTP Request Smuggling.
How severe is CVE-2022-35256?
CVE-2022-35256 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 2.59% probability of exploitation in the next 30 days.
How do I fix CVE-2022-35256?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Are you affected by CVE-2022-35256?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST