CVE-2026-42256 net-imap: Denial of service via high iteration count for `SCRAM-*` authentication

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...

CVE-2026-42256 net-imap: Denial of service via high iteration count for `SCRAM-*` authentication

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...

CVE-2026-42256

Net::IMAP (Ruby) is affected by a Denial of Service when authenticating with SCRAM-SHA1/SCRAM-SHA256 if a hostile server sends a very high iteration count. Affected versions: 0.4.0–0.4.23, 0.5.0–0.5.13, 0.6.0–0.0.6. Wait that seems wrong: fix lists are 0.4.24, 0.5.14, 0.6.4. Corrected: Affected r...