CVE-2025-43857

Net::IMAP for Ruby is vulnerable to denial of service via memory exhaustion when processing server responses containing a literal byte count. A malicious server can trigger the client’s receiver thread to allocate memory for the indicated size, potentially exhausting memory during any active conn...

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...