diff --git a/src/lib/formatters/open-source-sarif-output.ts b/src/lib/formatters/open-source-sarif-output.ts
index 0388674197..7989dcb586 100644
--- a/src/lib/formatters/open-source-sarif-output.ts
+++ b/src/lib/formatters/open-source-sarif-output.ts
@@ -93,7 +93,7 @@ ${vuln.description}`.replace(/##\s/g, '# '),
             testResult.packageManager!,
           ],
           cvssv3_baseScore: vuln.cvssScore, // AWS
-          'security-severity': String(vuln.cvssScore), // GitHub
+          'security-severity': String(!!vuln.cvssScore? vuln.cvssScore : 0), // GitHub
         },
       };
     },
diff --git a/src/lib/formatters/sarif-output.ts b/src/lib/formatters/sarif-output.ts
index 7af459f9c5..52e4f83c0b 100644
--- a/src/lib/formatters/sarif-output.ts
+++ b/src/lib/formatters/sarif-output.ts
@@ -87,7 +87,7 @@ export function getTool(testResult): sarif.Tool {
             testResult.packageManager!,
           ],
           cvssv3_baseScore: vuln.cvssScore, // AWS
-          'security-severity': String(vuln.cvssScore), // GitHub
+          'security-severity': String(!!vuln.cvssScore? vuln.cvssScore : 0), // GitHub
         },
       };
     })