Updated advisory posts against rubysec/ruby-advisory-db@3a4007e

Author: jasnow

advisories/_posts/2024-03-21-CVE-2024-27281.md

@@ -35,6 +35,7 @@ advisory:
 
     Note: 6.3.4, 6.4.1, 6.5.1 and 6.6.3 have a incorrect fix. We recommend to
     upgrade 6.3.4.1, 6.4.1.1, 6.5.1.1 and 6.6.3.1 instead of them.
+  cvss_v3: 4.5
   patched_versions:
   - "~> 6.3.4, >= 6.3.4.1"
   - "~> 6.4.1, >= 6.4.1.1"