CRLF Injection The advisory has been revoked - it doesn't affect any version of package nodejs24-npm (opens in a new tab)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-RHEL10-NODEJS24NPM-15564172
- published14 Mar 2026
- disclosed12 Mar 2026
Introduced: 12 Mar 2026
CVE-2026-1527 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream nodejs24-npm package and not the nodejs24-npm package as distributed by RHEL.
ImpactWhen an application passes user-controlled input to the upgrade option of client.request(), an attacker can inject CRLF sequences (\r\n) to:
- Inject arbitrary HTTP headers
- Terminate the HTTP request prematurely and smuggle raw data to non-HTTP services (Redis, Memcached, Elasticsearch) The vulnerability exists because undici writes the upgrade value directly to the socket without validating for invalid header characters:
// lib/dispatcher/client-h1.js:1121
if (upgrade) {
header += connection: upgrade\r\nupgrade: ${upgrade}\r\n
}
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2447141
- https://access.redhat.com/security/cve/CVE-2026-1527
- https://access.redhat.com/errata/RHSA-2026:7675
- https://cna.openjsf.org/security-advisories.html
- https://github.com/nodejs/undici/security/advisories/GHSA-4992-7rv2-5pvq
- https://hackerone.com/reports/3487198