CVE-2026-43864LOW NVDCVSS Score 2.5Severity LOWPublished May 04, 2026Vendor unknownDescriptionmutt before 2.3.2 has a show_sig_summary NULL pointer dereference.Referenceshttps://github.com/muttmua/mutt/commit/ebfa2969042d89303d15334193fcc32866c8a8df