diff --git a/.github/workflows/nightly-build.yml b/.github/workflows/nightly-build.yml
index 1f0826a6..1fd30820 100644
--- a/.github/workflows/nightly-build.yml
+++ b/.github/workflows/nightly-build.yml
@@ -554,18 +554,81 @@ jobs:
             echo "- Structured SARIF counts: CRITICAL=${CRITICAL_COUNT}, HIGH=${HIGH_COUNT}, MEDIUM=${MEDIUM_COUNT}"
           } >> "$GITHUB_STEP_SUMMARY"
 
+          # List all Critical/High/Medium findings with details for triage
+          # shellcheck disable=SC2016
+          LIST_FINDINGS='
+            .runs[] as $run
+            | ($run.tool.driver.rules // []) as $rules
+            | $run.results[]?
+            | . as $result
+            | (
+                (
+                  if (($result.ruleIndex | type) == "number") then
+                    ($rules[$result.ruleIndex] // {})
+                  else
+                    {}
+                  end
+                ) as $ruleByIndex
+                | (
+                    [$rules[]? | select((.id // "") == ($result.ruleId // ""))][0] // {}
+                  ) as $ruleById
+                | ($ruleByIndex // $ruleById) as $rule
+                | ($rule.properties["security-severity"] // null) as $sev
+                | (try ($sev | tonumber) catch null) as $score
+                | select($score != null and $score >= 4.0)
+                | {
+                    id: ($result.ruleId // "unknown"),
+                    score: $score,
+                    severity: (
+                      if $score >= 9.0 then "CRITICAL"
+                      elif $score >= 7.0 then "HIGH"
+                      else "MEDIUM"
+                      end
+                    ),
+                    message: ($result.message.text // $rule.shortDescription.text // "no description")[0:120]
+                  }
+              )
+          '
+
+          echo ""
+          echo "=== Vulnerability Details ==="
+          jq -r "[ ${LIST_FINDINGS} ] | sort_by(-.score) | .[] | \"\\(.severity) (\\(.score)): \\(.id) — \\(.message)\"" trivy-nightly.sarif || true
+          echo "============================="
+          echo ""
+
           if [ "$CRITICAL_COUNT" -gt 0 ]; then
             echo "❌ Critical vulnerabilities found in nightly build (${CRITICAL_COUNT})"
+            {
+              echo ""
+              echo "### ❌ Critical CVEs blocking nightly"
+              echo '```'
+              jq -r "[ ${LIST_FINDINGS} | select(.severity == \"CRITICAL\") ] | sort_by(-.score) | .[] | \"\\(.id) (score: \\(.score)): \\(.message)\"" trivy-nightly.sarif || true
+              echo '```'
+            } >> "$GITHUB_STEP_SUMMARY"
             exit 1
           fi
 
           if [ "$HIGH_COUNT" -gt 0 ]; then
             echo "❌ High vulnerabilities found in nightly build (${HIGH_COUNT})"
+            {
+              echo ""
+              echo "### ❌ High CVEs blocking nightly"
+              echo '```'
+              jq -r "[ ${LIST_FINDINGS} | select(.severity == \"HIGH\") ] | sort_by(-.score) | .[] | \"\\(.id) (score: \\(.score)): \\(.message)\"" trivy-nightly.sarif || true
+              echo '```'
+            } >> "$GITHUB_STEP_SUMMARY"
             exit 1
           fi
 
           if [ "$MEDIUM_COUNT" -gt 0 ]; then
             echo "::warning::Medium vulnerabilities found in nightly build (${MEDIUM_COUNT}). Non-blocking by policy; triage with SLA per .github/security-severity-policy.yml"
+            {
+              echo ""
+              echo "### ⚠️ Medium CVEs (non-blocking)"
+              echo '```'
+              jq -r "[ ${LIST_FINDINGS} | select(.severity == \"MEDIUM\") ] | sort_by(-.score) | .[] | \"\\(.id) (score: \\(.score)): \\(.message)\"" trivy-nightly.sarif || true
+              echo '```'
+            } >> "$GITHUB_STEP_SUMMARY"
           fi
 
           echo "✅ No Critical/High vulnerabilities found"