diff --git a/vulnerabilities/migrations/0109_alter_advisoryseverity_scoring_elements_and_more.py b/vulnerabilities/migrations/0109_alter_advisoryseverity_scoring_elements_and_more.py
new file mode 100644
index 000000000..f5c2b922e
--- /dev/null
+++ b/vulnerabilities/migrations/0109_alter_advisoryseverity_scoring_elements_and_more.py
@@ -0,0 +1,31 @@
+# Generated by Django 4.2.25 on 2025-12-31 10:45
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("vulnerabilities", "0108_advisoryv2_advisory_latest_by_avid_idx"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="advisoryseverity",
+            name="scoring_elements",
+            field=models.CharField(
+                help_text="Supporting scoring elements used to compute the score values. For example a CVSS vector string as used to compute a CVSS score.",
+                max_length=250,
+                null=True,
+            ),
+        ),
+        migrations.AlterField(
+            model_name="vulnerabilityseverity",
+            name="scoring_elements",
+            field=models.CharField(
+                help_text="Supporting scoring elements used to compute the score values. For example a CVSS vector string as used to compute a CVSS score.",
+                max_length=250,
+                null=True,
+            ),
+        ),
+    ]
diff --git a/vulnerabilities/models.py b/vulnerabilities/models.py
index ed5c2d254..38f4ebdc3 100644
--- a/vulnerabilities/models.py
+++ b/vulnerabilities/models.py
@@ -203,7 +203,7 @@ class VulnerabilitySeverity(models.Model):
     value = models.CharField(max_length=50, help_text="Example: 9.0, Important, High")
 
     scoring_elements = models.CharField(
-        max_length=150,
+        max_length=250,
         null=True,
         help_text="Supporting scoring elements used to compute the score values. "
         "For example a CVSS vector string as used to compute a CVSS score.",
@@ -2565,7 +2565,7 @@ class AdvisorySeverity(models.Model):
     value = models.CharField(max_length=50, help_text="Example: 9.0, Important, High", null=True)
 
     scoring_elements = models.CharField(
-        max_length=150,
+        max_length=250,
         null=True,
         help_text="Supporting scoring elements used to compute the score values. "
         "For example a CVSS vector string as used to compute a CVSS score.",
diff --git a/vulnerabilities/tests/test_models.py b/vulnerabilities/tests/test_models.py
index 46a99256d..6c15b862a 100644
--- a/vulnerabilities/tests/test_models.py
+++ b/vulnerabilities/tests/test_models.py
@@ -25,10 +25,12 @@
 from vulnerabilities.importer import AdvisoryData
 from vulnerabilities.importer import AffectedPackage
 from vulnerabilities.importer import Reference
+from vulnerabilities.models import AdvisorySeverity
 from vulnerabilities.models import Alias
 from vulnerabilities.models import Package
 from vulnerabilities.models import Patch
 from vulnerabilities.models import Vulnerability
+from vulnerabilities.severity_systems import CVSSV4
 from vulnerabilities.utils import compute_content_id
 
 
@@ -720,3 +722,16 @@ def test_constraint_none_empty(self):
         with self.assertRaises(IntegrityError) as raised:
             Patch.objects.create(patch_url=None, patch_text="")
         self.assertIn("patch_url_or_patch_text", str(raised.exception))
+
+
+class TestStoreLongCVSSV4(TestCase):
+    @pytest.mark.django_db
+    def test_constraint_none(self):
+        AdvisorySeverity.objects.create(
+            scoring_system=CVSSV4,
+            scoring_elements="CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
+        )
+        AdvisorySeverity.objects.create(
+            scoring_system=CVSSV4,
+            scoring_elements="CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:A/VC:L/VI:L/VA:H/SC:H/SI:L/SA:L/E:A/CR:M/IR:M/AR:M/MAV:A/MAC:L/MAT:P/MPR:L/MVC:L/MVI:L/MVA:L/MSC:H/MSI:H/MSA:H/S:P/AU:Y/R:U/V:C/RE:M/U:Amber",
+        )