Add vpatch-CVE-2021-24786 rule and test

.appsec-tests/vpatch-CVE-2021-24786/CVE-2021-24786.yaml

@@ -0,0 +1,18 @@
+## autogenerated on 2026-03-30 12:38:33
+id: CVE-2021-24786
+info:
+  name: CVE-2021-24786
+  author: crowdsec
+  severity: info
+  description: CVE-2021-24786 testing
+  tags: appsec-testing
+http:
+  - raw:
+      - |
+        GET /wp-admin/edit.php?post_type=dlm_download&page=download-monitor-logs&orderby=download_date`+and+(select+sleep(8))+and+`user_id=user_id HTTP/1.1
+        Host: {{Hostname}}
+    cookie-reuse: true
+    matchers:
+    - type: status
+      status:
+       - 403

.appsec-tests/vpatch-CVE-2021-24786/config.yaml

@@ -0,0 +1,5 @@
+## autogenerated on 2026-03-30 12:38:33
+appsec-rules:
+  - ./appsec-rules/crowdsecurity/base-config.yaml
+  - ./appsec-rules/crowdsecurity/vpatch-CVE-2021-24786.yaml
+nuclei_template: CVE-2021-24786.yaml

appsec-rules/crowdsecurity/vpatch-CVE-2021-24786.yaml

@@ -0,0 +1,35 @@
+## autogenerated on 2026-03-30 12:38:33
+name: crowdsecurity/vpatch-CVE-2021-24786
+description: 'Detects SQL injection in Download Monitor plugin for WordPress via orderby parameter (CVE-2021-24786)'
+rules:
+  - and:
+      - zones:
+          - URI
+        transform:
+          - lowercase
+          - urldecode
+        match:
+          type: contains
+          value: /wp-admin/edit.php
+      - zones:
+          - ARGS
+        variables:
+          - orderby
+        transform:
+          - lowercase
+          - urldecode
+        match:
+          type: regex
+          value: "[^a-z0-9]"
+
+labels:
+  type: exploit
+  service: http
+  confidence: 3
+  spoofable: 0
+  behavior: 'http:exploit'
+  label: 'Download Monitor - SQLI'
+  classification:
+    - cve.CVE-2021-24786
+    - attack.T1190
+    - cwe.CWE-89

collections/crowdsecurity/appsec-virtual-patching.yaml

@@ -99,6 +99,7 @@ appsec-rules:
 - crowdsecurity/vpatch-CVE-2020-9054
 - crowdsecurity/vpatch-CVE-2024-27564
 - crowdsecurity/vpatch-CVE-2021-44529
+- crowdsecurity/vpatch-CVE-2021-24786
 - crowdsecurity/vpatch-CVE-2024-57727
 - crowdsecurity/vpatch-CVE-2024-27292
 - crowdsecurity/vpatch-CVE-2025-24893