1## autogenerated on 2025-10-29 15:22:01
2name: crowdsecurity/vpatch-CVE-2021-32478
3description: 'Detects reflected XSS and open redirect in Moodle LTI authorization endpoint via unsanitized redirect_uri parameter.'
4rules:
5  - and:
6      - zones:
7          - URI
8        transform:
9          - lowercase
10        match:
11          type: contains
12          value: /mod/lti/auth.php
13      - zones:
14          - ARGS
15        variables:
16          - redirect_uri
17        transform:
18          - urldecode
19          - lowercase
20        match:
21          type: contains
22          value: 'javascript:'
23
24labels:
25  type: exploit
26  service: http
27  confidence: 3
28  spoofable: 0
29  behavior: 'http:exploit'
30  label: 'Moodle - XSS'
31  classification:
32    - cve.CVE-2021-32478
33    - attack.T1059
34    - cwe.CWE-79
35