View at Official ubuntu advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2026-42012 medium priority: Ubuntu including 1 source packages (gnutls28), 8 status rows across 8 suites (bionic, focal, jammy, noble, questing, resolute, upstream, xenial): released 5, needs-triage 3.
Certificates containing URI or SRV Subject Alternative Names would fall back to checking DNS hostnames against Common Name, allowing potential misuse of such certificates beyond their original purpose.