Add security advisory email notification workflow

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2026-05-26 19:26:33 +00:00 · 2026-05-04 20:59:18 +00:00
parent 1751c8eec0
commit a642d16f89
1 changed files with 93 additions and 0 deletions
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+name: Security Advisory Email Notification
+
+on:
+  repository_advisory:
+    types: [reported, created, published, submitted, reopened]
+
+permissions:
+  contents: read
+
+jobs:
+  notify-owners:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Ensure SMTP secrets are configured
+        id: check_secrets
+        env:
+          MAIL_SERVER: ${{ secrets.ADVISORY_MAIL_SERVER }}
+          MAIL_USERNAME: ${{ secrets.ADVISORY_MAIL_USERNAME }}
+          MAIL_PASSWORD: ${{ secrets.ADVISORY_MAIL_PASSWORD }}
+          MAIL_TO: ${{ secrets.ADVISORY_MAIL_TO }}
+        run: |
+          missing=()
+          [ -z "$MAIL_SERVER" ]   && missing+=("ADVISORY_MAIL_SERVER")
+          [ -z "$MAIL_USERNAME" ] && missing+=("ADVISORY_MAIL_USERNAME")
+          [ -z "$MAIL_PASSWORD" ] && missing+=("ADVISORY_MAIL_PASSWORD")
+          [ -z "$MAIL_TO" ]       && missing+=("ADVISORY_MAIL_TO")
+
+          if [ ${#missing[@]} -gt 0 ]; then
+            echo "::warning::Missing required secrets: ${missing[*]}. Skipping advisory email notification. Configure these secrets in your repository or organization settings."
+            echo "skip=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "skip=false" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Build email body
+        if: steps.check_secrets.outputs.skip == 'false'
+        id: build_body
+        env:
+          ADVISORY_TITLE: ${{ github.event.repository_advisory.summary }}
+          ADVISORY_SEVERITY: ${{ github.event.repository_advisory.severity }}
+          ADVISORY_STATE: ${{ github.event.repository_advisory.state }}
+          ADVISORY_CVE: ${{ github.event.repository_advisory.cve_id }}
+          ADVISORY_URL: ${{ github.event.repository_advisory.html_url }}
+          ADVISORY_DESCRIPTION: ${{ github.event.repository_advisory.description }}
+          ADVISORY_ACTION: ${{ github.event.action }}
+          REPO: ${{ github.repository }}
+          ACTOR: ${{ github.actor }}
+        run: |
+          CVE_LINE=""
+          if [ -n "$ADVISORY_CVE" ]; then
+            CVE_LINE="CVE ID    : $ADVISORY_CVE"$'\n'
+          fi
+
+          BODY="A security advisory has been ${ADVISORY_ACTION} on the repository ${REPO}.
+
+Repository : https://github.com/${REPO}
+Action     : ${ADVISORY_ACTION}
+Title      : ${ADVISORY_TITLE}
+Severity   : ${ADVISORY_SEVERITY}
+State      : ${ADVISORY_STATE}
+${CVE_LINE}Advisory   : ${ADVISORY_URL}
+Reported by: ${ACTOR}
+
+--- Description ---
+${ADVISORY_DESCRIPTION}
+
+---
+This notification was sent automatically by GitHub Actions.
+Repository: https://github.com/${REPO}
+"
+
+          # Write to file to avoid multiline env issues
+          printf '%s' "$BODY" > /tmp/advisory_body.txt
+          echo "body_file=/tmp/advisory_body.txt" >> "$GITHUB_OUTPUT"
+
+      - name: Send email to org owners
+        if: steps.check_secrets.outputs.skip == 'false'
+        # dawidd6/action-send-mail v3.12.0 — pinned to exact commit for supply-chain security.
+        # Verify: https://github.com/dawidd6/action-send-mail/commit/2cea9617b09d83a84e7015b8b4c893f01b028020
+        uses: dawidd6/action-send-mail@2cea9617b09d83a84e7015b8b4c893f01b028020
+        with:
+          server_address: ${{ secrets.ADVISORY_MAIL_SERVER }}
+          # ADVISORY_MAIL_PORT defaults to 465 (SMTPS / implicit TLS).
+          # Set the secret to 587 and secure to false if your SMTP server requires STARTTLS instead.
+          server_port: ${{ secrets.ADVISORY_MAIL_PORT || 465 }}
+          secure: ${{ secrets.ADVISORY_MAIL_SECURE || true }}
+          username: ${{ secrets.ADVISORY_MAIL_USERNAME }}
+          password: ${{ secrets.ADVISORY_MAIL_PASSWORD }}
+          subject: "[Security Advisory] [${{ github.event.repository_advisory.severity }}] ${{ github.event.repository_advisory.summary }} — ${{ github.repository }}"
+          to: ${{ secrets.ADVISORY_MAIL_TO }}
+          from: "GitHub Advisory Bot <${{ secrets.ADVISORY_MAIL_USERNAME }}>"
+          body: file:///tmp/advisory_body.txt