3 files changed, 102 insertions, 0 deletions
diff --git a/.github/workflows/find-issues-with-missing-labels.yml b/.github/workflows/find-issues-with-missing-labels.yml
new file mode 100644
index 00000000000..631c98b67b8
--- /dev/null
+++ b/.github/workflows/find-issues-with-missing-labels.yml
@@ -0,0 +1,22 @@
+name: 'Find issues with missing labels'
+
+on:
+  schedule:
+    # Run every Sunday at midnight
+    - cron: '0 0 * * 0'
+
+jobs:
+  check-unlabeled-issues:
+    runs-on: ubuntu-latest
+
+    permissions:
+      issues: write
+
+    env:
+      GH_TOKEN: ${{ github.token }}
+
+    steps:
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+
+      - name: Search for issues with missing labels
+        run: bash ./tools/find-issues-with-missing-labels.sh
diff --git a/docs/development/issue-labeling.md b/docs/development/issue-labeling.md
index e294b2745ed..35038eab39c 100644
--- a/docs/development/issue-labeling.md
+++ b/docs/development/issue-labeling.md
@@ -221,3 +221,15 @@ Add a label `auto:retry-latest` to any Discussion where the user should retry th
 </details>
 
 Apply the `self-hosted` label when an issue is applicable only to users who self-administer their own bot.
+
+## Automated check for Issues with missing labels
+
+We have a GitHub Action (`find-issues-with-missing-labels.yml`) to find issues on our repository that are missing labels.
+Any Issues with missing labels will be put in a list in a new "error" Issue.
+
+The Action runs each week.
+
+### Apply the correct labels manually
+
+The Action will _not_ fix any badly labeled issues.
+This means that you, or we, must apply the correct labels to any affected Issue.
diff --git a/tools/find-issues-with-missing-labels.sh b/tools/find-issues-with-missing-labels.sh
new file mode 100755
index 00000000000..26bdc15eadc
--- /dev/null
+++ b/tools/find-issues-with-missing-labels.sh
@@ -0,0 +1,68 @@
+#!/bin/bash
+
+# When the repository labels are changed (i.e dropped a label, added a label, etc), you should make the same change to the lists below.
+# For example, if the repository added a "type:task" type label, then add "-label:type:task" to the TYPE_LABELS_FILTER.
+TYPE_LABELS_FILTER='-label:type:bug -label:type:feature -label:type:docs -label:type:refactor -label:type:help'
+
+PRIORITY_LABELS_FILTER='-label:priority-1-critical -label:priority-2-high -label:priority-3-medium -label:priority-4-low'
+
+HAS_ISSUES_MISSING_LABELS=false
+
+ISSUE_BODY="# Label check action\n"
+
+REPO='renovatebot/renovate'
+
+ISSUE_TITLE="Issues with missing labels"
+
+for FILTER in "$TYPE_LABELS_FILTER" "$PRIORITY_LABELS_FILTER"; do
+  # Extract the label type from the filter
+  LABEL_TYPE=$(echo "$FILTER" | cut -d ':' -f 2 | cut -d '-' -f 1)
+
+  # Fetch issues that match the filter
+  ISSUES_MISSING_LABEL=$(gh issue list --repo $REPO --limit 100000 -s open -S "$FILTER" --json "number,title") || { echo "Failed to fetch issues without $LABEL_TYPE labels"; exit 1; }
+  # Ignore the Issue from the "Find issues with missing labels" Action
+  ISSUES_MISSING_LABEL=$(echo "$ISSUES_MISSING_LABEL" | jq --arg title "$ISSUE_TITLE" 'map(select(.title != $title))')
+
+  if [ "$ISSUES_MISSING_LABEL" != "[]" ]; then
+    HAS_ISSUES_MISSING_LABELS=true
+
+    # Create a list of issue numbers
+    FORMATTED_OUTPUT=$(echo "$ISSUES_MISSING_LABEL" | jq -r '.[].number' | sed 's/^/- #/')
+
+    # Count the issues and decide if the output should be singular or plural
+    ISSUE_COUNT=$(echo "$ISSUES_MISSING_LABEL" | jq '. | length')
+    ISSUE_SINGULAR_PLURAL=$(if [ "$ISSUE_COUNT" -eq 1 ]; then echo "issue"; else echo "issues"; fi)
+
+    # Append the "list of issues without labels" to the issue body
+    ISSUE_BODY="$ISSUE_BODY## Found $ISSUE_COUNT $ISSUE_SINGULAR_PLURAL missing \`$LABEL_TYPE:\` labels:\n$FORMATTED_OUTPUT\n"
+  fi
+done
+
+if [ "$HAS_ISSUES_MISSING_LABELS" = false ]; then
+  echo "All checked issues have labels. Exiting the action."
+  exit 0
+fi
+
+LABEL_CHECK_ISSUE_EXISTS=$(gh search issues --repo $REPO --json "number,author,title" | jq --arg title "$ISSUE_TITLE" 'map(select(.title == $title and .author.type == "Bot"))') || { echo "Failed to fetch existing label check issue"; exit 1; }
+ISSUE_NUMBER=$(echo "$LABEL_CHECK_ISSUE_EXISTS" | jq -r '.[].number')
+
+if [ -z "$ISSUE_NUMBER" ]; then
+
+  # Create a new issue (with the list of issues in it).
+  gh issue create --repo $REPO --title "$ISSUE_TITLE" --body "$(echo -e "$ISSUE_BODY")" || { echo "Failed to create issue."; exit 1; }
+else
+  # Edit the open issue, and update the list of issues.
+  gh issue edit "$ISSUE_NUMBER" --repo $REPO --title "$ISSUE_TITLE" --body "$(echo -e "$ISSUE_BODY")" || { echo "Failed to update issue."; exit 1; }
+
+  # Re-open the issue.
+  gh issue reopen "$ISSUE_NUMBER" --repo $REPO || { echo "Failed to reopen issue"; exit 1; }
+fi
+
+# Show the list of "issues with missing labels" in the logs.
+echo -e "$ISSUE_BODY"
+
+# Log a message and "fail" the Action if there are issues with missing labels
+echo "Found issues without labels. Please check the issue(s) listed above. Exiting the action."
+
+exit 1
+