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HTTP Response Splitting The advisory has been revoked - it doesn't affect any version of package ruby  (opens in a new tab)

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EPSS
4.57% (91st percentile)

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  • Snyk IDSNYK-RHEL10-RUBY-16079967
  • published16 Apr 2026
  • disclosed25 Oct 2019
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Introduced: 25 Oct 2019

CVE-2019-16254  (opens in a new tab)
CWE-113  (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 ruby package and not the ruby package as distributed by RHEL.

Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. NOTE: this issue exists because of an incomplete fix for CVE-2017-17742, which addressed the CRLF vector, but did not address an isolated CR or an isolated LF.

References