CVE-2026-42245: fallo de gravedad baja en ruby net-imap
net-imap: Quadratic complexity when reading response literals
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
8Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 2.3epss 0.4%
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
Productos afectados
ruby · net-imapCVEs relacionadas — ruby net-imap
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-47240MEDIUMNet::IMAP: Command Injection via non-synchronizing literal in "raw" argumentEPSS 0.8%CVE-2026-42258MEDIUMnet-imap: Command Injection via unvalidated Symbol inputsEPSS 0.8%CVE-2025-25186MEDIUMNet::IMAP vulnerable to possible DoS by memory exhaustionEPSS 0.6%CVE-2025-43857MEDIUMnet-imap rubygem vulnerable to possible DoS by memory exhaustionEPSS 0.5%CVE-2026-42257MEDIUMnet-imap: Command Injection via "raw" arguments to multiple commandsEPSS 0.4%CVE-2026-47241LOWNet::IMAP: Denial of Service via incomplete raw argument validationEPSS 0.4%
Referencias
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