diff --git a/convert/convert_test.go b/convert/convert_test.go
index 6c847db06124fba0a20d06c6bf3b91b42b77d8c6..22763ff7a82378371e5db74f0d83302368ab75cf 100644
--- a/convert/convert_test.go
+++ b/convert/convert_test.go
@@ -22,6 +22,7 @@ func TestConvert(t *testing.T) {
 		Identifier:       null.StringFrom("CVE-1234"),
 		Title:            "Regular Expression Denial of Service",
 		Description:      "Xyz is vulnerable to ReDoS in the Xyz parameter.",
+		Severity:         null.StringFrom("medium"),
 		Solution:         null.StringFrom("Upgrade to latest version."),
 		Links:            []string{"https://security.io/advisories/119", "https://security.io/advisories/117", "https://security.io/advisories/118"},
 	}
@@ -86,7 +87,7 @@ func TestConvert(t *testing.T) {
 				Message:     "Regular Expression Denial of Service in pg",
 				Description: "Xyz is vulnerable to ReDoS in the Xyz parameter.",
 				CompareKey:  "app/rails/Gemfile.lock:pg:gemnasium:7d9ba955-fd99-4503-936e-f6833768f76e",
-				Severity:    issue.SeverityLevelUnknown,
+				Severity:    issue.SeverityLevelMedium,
 				Solution:    "Upgrade to latest version.",
 				Location: issue.Location{
 					File: "app/rails/Gemfile.lock",
diff --git a/convert/vulnerability_converter.go b/convert/vulnerability_converter.go
index 5d2f0b3fa9224db8a732f26dfc3df99004a9084d..ced75db79486665b380547d75577c70d00e197f3 100644
--- a/convert/vulnerability_converter.go
+++ b/convert/vulnerability_converter.go
@@ -31,7 +31,7 @@ func (c VulnerabilityConverter) Issue() issue.Issue {
 		},
 		Name:        c.Advisory.Title,
 		Description: c.Advisory.Description,
-		Severity:    issue.SeverityLevelUnknown,
+		Severity:    c.severity(),
 		Solution:    c.Advisory.Solution.String,
 		Identifiers: c.identifiers(),
 		Links:       issue.NewLinks(c.Advisory.Links...),
@@ -51,6 +51,20 @@ func (c VulnerabilityConverter) filePath() string {
 	return filepath.Join(c.PrependPath, c.Source.FilePath)
 }
 
+func (c VulnerabilityConverter) severity() issue.SeverityLevel {
+	switch c.Advisory.Severity.String {
+	case "critical":
+		return issue.SeverityLevelCritical
+	case "high":
+		return issue.SeverityLevelHigh
+	case "medium":
+		return issue.SeverityLevelMedium
+	case "low":
+		return issue.SeverityLevelLow
+	}
+	return issue.SeverityLevelUnknown
+}
+
 func (c VulnerabilityConverter) identifiers() []issue.Identifier {
 	ids := []issue.Identifier{c.primaryIdentifier()}
 	if id := c.Advisory.Identifier; id.Valid {
diff --git a/scanner/advisory.go b/scanner/advisory.go
index 02b4cf0e8a91b9d7312166ded4cd890232b34f8d..8f2a0fc68e29263d160d82063840a4bc03e28a2a 100644
--- a/scanner/advisory.go
+++ b/scanner/advisory.go
@@ -12,6 +12,7 @@ type Advisory struct {
 	DisclosureDate   string      `json:"date"`              // DisclosureDate is the date on which the advisory was made public.
 	FixedVersions    []string    `json:"fixed_versions"`    // FixedVersions are the versions fixing the vulnerability.
 	AffectedVersions []string    `json:"affected_versions"` // AffectedVersions are the versions affected by the vulnerability.
+	Severity         null.String `json:"severity"`          // Severity is either low, medium, high or critical.
 	Solution         null.String `json:"solution"`          // Solution describes how to remediate the vulnerability.
 	Credit           null.String `json:"credit"`            // Credit gives the names of the people who reported the vulnerability or helped fixing it.
 	Links            []string    `json:"urls"`              // Links are URLs of: detailed advisory, documented exploit, vulnerable source code, etc.
diff --git a/scanner/advisory_test.go b/scanner/advisory_test.go
index 094b0828a2bb5d594a65455f9ec2ed4247a81d37..e34a6d2f61457093d642d4df80381c752b925940 100644
--- a/scanner/advisory_test.go
+++ b/scanner/advisory_test.go
@@ -37,6 +37,7 @@ func TestAdvisory(t *testing.T) {
 			DisclosureDate:   "2016-06-20",
 			FixedVersions:    []string{"3.0.2"},
 			AffectedVersions: []string{"2.0.10", "3.0.0"},
+			Severity:         null.StringFrom("medium"),
 			Solution:         null.StringFrom("Upgrade to latest version."),
 			Credit:           null.StringFrom("Nick Starke"),
 			Links:            []string{"https://nodesecurity.io/advisories/118"},
@@ -72,6 +73,7 @@ func TestAdvisory(t *testing.T) {
             "2.0.10",
             "3.0.0"
       ],
+      "severity": "medium",
       "solution": "Upgrade to latest version.",
       "credit": "Nick Starke",
       "urls": [
diff --git a/scanner/client_test.go b/scanner/client_test.go
index 8dee37ea42d6bb9045a51506f276ea891a87d0ec..fb1afb127a2f1599ae8e2a0e20978711839e1957 100644
--- a/scanner/client_test.go
+++ b/scanner/client_test.go
@@ -25,6 +25,7 @@ const testJSONAdvisories = `[{
         "2.0.10",
         "3.0.0"
       ],
+      "severity": "medium",
       "solution": "Upgrade to latest version.",
       "credit": "Nick Starke",
       "urls": [
@@ -46,6 +47,7 @@ var testAdvisories = []Advisory{
 		DisclosureDate:   "2016-06-20",
 		FixedVersions:    []string{"3.0.2"},
 		AffectedVersions: []string{"2.0.10", "3.0.0"},
+		Severity:         null.StringFrom("medium"),
 		Solution:         null.StringFrom("Upgrade to latest version."),
 		Credit:           null.StringFrom("Nick Starke"),
 		Links:            []string{"https://nodesecurity.io/advisories/118"},