Both CVEs affect Debian 13 base image packages with no fixed version:
- CVE-2026-4878: libcap2 privilege escalation via TOCTOU race in cap_set_file()
- CVE-2026-33845: libgnutls30t64 DoS via DTLS zero-length fragment
CVE-2025-69720 (ncurses), CVE-2026-27135 (nghttp2), and CVE-2026-29111
(systemd) have no upstream fix available. .trivyignore suppresses them
so Trivy can still gate on all other CRITICAL/HIGH findings without
relying on the coarser ignore-unfixed flag in the workflow.