feat: add created date and updated date as parameters for CVE search

Author: ldurnez

docs/guides/advanced_search.md

@@ -55,6 +55,8 @@ The currently supported fields are:
 - **project** – Search using the vendors and products subscribed in a project.
 - **kev** – Search based on the KEV catalog. Accepts `true` or `false`.
 - **epss** – Search based on EPSS score. Accepts a percentage (e.g., `epss:80`) or a decimal between 0 and 1 (e.g., `epss:'0.8'`).
+- **created** - Search by CVE creation date.
+- **updated** - Search by CVE last modification date.
 
 !!! important
     Each field supports specific operators to refine your queries effectively:
@@ -63,6 +65,7 @@ The currently supported fields are:
         - `:` performs a partial (LIKE) search.
         - `=` performs an exact match search.
     - Metrics fields (**cvss20**, **cvss30**, **cvss31**, **cvss40**, **epss**) support the following comparison operators: `>`, `>=`, `<`, `<=`, `=`.
+    - Date fields (**created**, **updated**) also support comparison operators (`>`, `>=`, `<`, `<=`, `=`). They accept a specific date in `YYYY-MM-DD` format or a relative date (e.g., `7d` for 7 days, `1m` for 1 month, or `1y` for 1 year).
     - **vendor**, **product**, **userTag** and **kev** fields only support the `:` operator.
 
 By using fields and operators, you can fine-tune your searches to quickly find relevant CVEs based on your needs.
@@ -121,6 +124,18 @@ To search all CVEs related to the vendors and products subscribed to in a projec
 project:my-project AND epss>=80
 ```
 
+To search for all CVEs created in the last 7 days and updated in the last 1 day:
+
+```
+created<=7d AND updated<=1d
+```
+
+To search for all Apache CVEs created in October 2025:
+
+```
+vendor:apache AND created>=2025-10-01 AND created<=2025-10-31
+```
+
 !!! tip
     Using the `project` field is convenient, as it automatically expands to include all the vendors and products your project is subscribed to.