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CVE-2026-42245

net-imap: Quadratic complexity when reading response literals

CVSS 2.3 LOWEPSS 0.4%CWE-407
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:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Produtos afetados
ruby · net-imap

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Referências
https://github.com/ruby/net-imap/commit/6091f7d6b1f3514cafbfe39c76f2b5d73de3ca96https://github.com/ruby/net-imap/commit/88d95231fc8afef11c1f074453f7d75b68c9dfdahttps://github.com/ruby/net-imap/commit/de685f91a4a4cc75eb80da898c2bf8af08d34819https://github.com/ruby/net-imap/releases/tag/v0.4.24https://github.com/ruby/net-imap/releases/tag/v0.5.14https://github.com/ruby/net-imap/releases/tag/v0.6.4https://github.com/ruby/net-imap/security/advisories/GHSA-q2mw-fvj9-vvcw