e792d6aa95
Apparently we allow empty dNSName SANs (e.g. a domain name of ""), which causes the excluded domain name wildcard checking to panic, because we assume names are always non-empty. RFC 5280 appears to say the empty string should not be accepted, although confusingly refers to this as " " (a single space). We should probably not allow that when creating certificates, and possibly when creating them as well (1.27 I guess). Thanks to Jakub Ciolek for reporting this issue. Updates #77953 Fixes #77974 Fixes CVE-2026-27138 Change-Id: I4fb213a5450470969a7436cba09b71fd1755a6af Reviewed-on: https://go-internal-review.googlesource.com/c/go/+/3420 Reviewed-by: Neal Patel <nealpatel@google.com> Reviewed-by: Nicholas Husin <husin@google.com> Reviewed-on: https://go-internal-review.googlesource.com/c/go/+/3621 Reviewed-by: Damien Neil <dneil@google.com> Reviewed-on: https://go-review.googlesource.com/c/go/+/752083 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> TryBot-Bypass: Gopher Robot <gobot@golang.org> Auto-Submit: Gopher Robot <gobot@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com>
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