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Unchecked Input for Loop Condition The advisory has been revoked - it doesn't affect any version of package ruby:3.3/rubygem-net-telnet  (opens in a new tab)

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EPSS
0.3% (23rd percentile)

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  • Snyk IDSNYK-RHEL8-RUBY-16745197
  • published18 May 2026
  • disclosed9 May 2026
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Introduced: 9 May 2026

CVE-2026-42256  (opens in a new tab)
CWE-606  (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 ruby:3.3/rubygem-net-telnet package and not the ruby:3.3/rubygem-net-telnet package as distributed by RHEL.

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. From versions 0.4.0 to before 0.4.24, 0.5.0 to before 0.5.14, and 0.6.0 to before 0.6.4, when authenticating a connection with SCRAM-SHA1 or SCRAM-SHA256, a hostile server can perform a computational denial-of-service attack on the client process by sending a big iteration count value. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4.