diff --git a/src/lib/singleview/vulnerabilities/vulnerability/Vulnerability.svelte b/src/lib/singleview/vulnerabilities/vulnerability/Vulnerability.svelte
index 3bf3ee1..76f6a48 100644
--- a/src/lib/singleview/vulnerabilities/vulnerability/Vulnerability.svelte
+++ b/src/lib/singleview/vulnerabilities/vulnerability/Vulnerability.svelte
@@ -58,7 +58,11 @@
     <div>
       <GeneralSection {vulnerability} />
       {#if vulnerability.acknowledgments}
-        <Collapsible header="Acknowledgments" level="4">
+        <Collapsible
+          header="Acknowledgments"
+          level="4"
+          open={vulnerability.acknowledgments.length === 1}
+        >
           <Acknowledgments acknowledegments={vulnerability.acknowledgments} />
         </Collapsible>
       {/if}
@@ -80,7 +84,7 @@
         <ProductStatus {vulnerability} />
       {/if}
       {#if vulnerability.references}
-        <Collapsible header="References" level="4">
+        <Collapsible header="References" level="4" open={vulnerability.references.length === 1}>
           <References references={vulnerability.references} />
         </Collapsible>
       {/if}
diff --git a/src/lib/singleview/vulnerabilities/vulnerability/flags/Flags.svelte b/src/lib/singleview/vulnerabilities/vulnerability/flags/Flags.svelte
index 4b6da9c..eb9492b 100644
--- a/src/lib/singleview/vulnerabilities/vulnerability/flags/Flags.svelte
+++ b/src/lib/singleview/vulnerabilities/vulnerability/flags/Flags.svelte
@@ -16,7 +16,11 @@
   export let vulnerability: Vulnerability;
 </script>
 
-<Collapsible header="Flags" level="4">
+<Collapsible
+  header="Flags"
+  level="4"
+  open={vulnerability.flags && vulnerability.flags.length === 1}
+>
   <div class="spacer" />
   {#if vulnerability.flags}
     {#each vulnerability.flags as flag}
diff --git a/src/lib/singleview/vulnerabilities/vulnerability/involvements/Involvements.svelte b/src/lib/singleview/vulnerabilities/vulnerability/involvements/Involvements.svelte
index 95cfd2e..68ac904 100644
--- a/src/lib/singleview/vulnerabilities/vulnerability/involvements/Involvements.svelte
+++ b/src/lib/singleview/vulnerabilities/vulnerability/involvements/Involvements.svelte
@@ -12,11 +12,12 @@
   import Collapsible from "$lib/Collapsible.svelte";
   import type { Vulnerability } from "$lib/types";
   import ValueField from "$lib/ValueField.svelte";
+  import Vulnerabilities from "../../Vulnerabilities.svelte";
   export let vulnerability: Vulnerability;
   $: vulnerabilities = vulnerability.involvements ? vulnerability.involvements : [];
 </script>
 
-<Collapsible header="Involvements" level="4">
+<Collapsible header="Involvements" level="4" open={Vulnerabilities.length === 1}>
   {#each vulnerabilities as involvement}
     {#if involvement.date}
       <ValueField label="Date" value={involvement.date} />
diff --git a/src/lib/singleview/vulnerabilities/vulnerability/remediations/Remediations.svelte b/src/lib/singleview/vulnerabilities/vulnerability/remediations/Remediations.svelte
index f92cc77..6411182 100644
--- a/src/lib/singleview/vulnerabilities/vulnerability/remediations/Remediations.svelte
+++ b/src/lib/singleview/vulnerabilities/vulnerability/remediations/Remediations.svelte
@@ -16,10 +16,18 @@
   export let vulnerability: Vulnerability;
 </script>
 
-<Collapsible header="Remediations" level="4">
+<Collapsible
+  header="Remediations"
+  level="4"
+  open={vulnerability.remediations && vulnerability.remediations.length === 1}
+>
   {#if vulnerability.remediations}
     {#each vulnerability.remediations as remediation}
-      <Collapsible header="Category: {remediation.category}" level="4">
+      <Collapsible
+        header="Category: {remediation.category}"
+        level="4"
+        open={vulnerability.remediations.length === 1}
+      >
         <Remediation {remediation} />
       </Collapsible>
     {/each}
diff --git a/src/lib/singleview/vulnerabilities/vulnerability/scores/Scores.svelte b/src/lib/singleview/vulnerabilities/vulnerability/scores/Scores.svelte
index 16c3dc0..9052a67 100644
--- a/src/lib/singleview/vulnerabilities/vulnerability/scores/Scores.svelte
+++ b/src/lib/singleview/vulnerabilities/vulnerability/scores/Scores.svelte
@@ -17,7 +17,11 @@
   export let vulnerability: Vulnerability;
 </script>
 
-<Collapsible header="Scores" level="4">
+<Collapsible
+  header="Scores"
+  level="4"
+  open={vulnerability.scores && vulnerability.scores.length === 1}
+>
   {#if vulnerability.scores}
     {#each vulnerability.scores as score, index}
       <Collapsible header="Score {index + 1}" level="4">
diff --git a/src/lib/singleview/vulnerabilities/vulnerability/threats/Threats.svelte b/src/lib/singleview/vulnerabilities/vulnerability/threats/Threats.svelte
index fe5f82b..464bb67 100644
--- a/src/lib/singleview/vulnerabilities/vulnerability/threats/Threats.svelte
+++ b/src/lib/singleview/vulnerabilities/vulnerability/threats/Threats.svelte
@@ -17,7 +17,7 @@
   $: threats = vulnerability.threats ? vulnerability.threats : [];
 </script>
 
-<Collapsible header="Threats" level="4">
+<Collapsible header="Threats" level="4" open={threats.length === 1}>
   <div class="spacer" />
   {#each threats as threat, index}
     <Threat {threat} />