GHSA-MC5Q-6HPJ-RP7J Grav: Twig sandbox config exfiltration via grav.offsetGet + dump filter (CVE-2026-44738 bypass)

Summary The Twig content sandbox replaces config with the redacted SandboxConfig facade and strips Config::get/toArray from the method allowlist GHSA-j274-39qw-32c9, so editor content can't read config secrets via config. That's bypassable: grav is the raw container, offsetget is allow-listed on...