HTTP Request Smuggling The advisory has been revoked - it doesn't affect any version of package nodejs:20/v8-12.4-devel (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL8-NODEJS-10184681
- published19 May 2025
- disclosed19 May 2025
Introduced: 19 May 2025
CVE-2025-23167 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream nodejs:20/v8-12.4-devel package and not the nodejs:20/v8-12.4-devel package as distributed by RHEL.
A flaw in Node.js 20's HTTP parser allows improper termination of HTTP/1 headers using \r\n\rX instead of the required \r\n\r\n.
This inconsistency enables request smuggling, allowing attackers to bypass proxy-based access controls and submit unauthorized requests.
The issue was resolved by upgrading llhttp to version 9, which enforces correct header termination.
Impact:
- This vulnerability affects only Node.js 20.x users prior to the
llhttpv9 upgrade.