CVE-2026-42256 | ruby net-imap up to 0.4.23/0.5.13/0.6.3 Net::IMAP blocking code in single-threaded, non-blocking context (GHSA-87pf-fpwv-p7m7)

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A vulnerability marked as problematic has been reported in ruby net-imap up to 0.4.23/0.5.13/0.6.3. Affected is the function Net::IMAP. The manipulation leads to use of blocking code in single-threaded, non-blocking context.

This vulnerability is documented as CVE-2026-42256. The attack can be initiated remotely. There is not any exploit available.

It is suggested to upgrade the affected component.VulDB Recent EntriesRead More