Algorithmic Complexity Affecting ruby3.3-rails-8.1 package, versions <8.1.3-r4


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.7% (52nd percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-RUBY33RAILS81-16778731
  • published20 May 2026
  • disclosed9 May 2026

Introduced: 9 May 2026

CVE-2026-42245  (opens in a new tab)
CWE-407  (opens in a new tab)

How to fix?

Upgrade Chainguard ruby3.3-rails-8.1 to version 8.1.3-r4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby3.3-rails-8.1 package and not the ruby3.3-rails-8.1 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, Net::IMAP::ResponseReader has quadratic time complexity when reading large responses containing many string literals. A hostile server can send responses which are crafted to exhaust the client's CPU for a denial of service attack. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4.

CVSS Base Scores

version 3.1