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CVE-2021-20280
🗓️ 15 Mar 2021 21:35:44Reported by redhatType 
cve🔗 web.nvd.nist.gov📰️ 7 Media mentions👁 123 Views🌐 WEB
| Reporter | Title | Published | Views | Family All 70 |
|---|---|---|---|---|
 | Moodle Cross Site Scripting / Server-Side Request Forgery Vulnerabilities | 9 Nov 202100:00 | – | zdt |
 | CVE-2021-20280 | 16 Mar 202101:29 | – | circl |
 | Moodle 跨站脚本漏洞 | 15 Mar 202100:00 | – | cnnvd |
 | Moodle cross-site scripting vulnerability (CNVD-2021-28733) | 19 Mar 202100:00 | – | cnvd |
 | CVE-2021-20280 | 15 Mar 202121:35 | – | cvelist |
 | EUVD-2021-0721 | 7 Oct 202500:30 | – | euvd |
 | [SECURITY] Fedora 32 Update: moodle-3.8.8-1.fc32 | 23 Mar 202101:12 | – | fedora |
| [SECURITY] Fedora 33 Update: moodle-3.9.5-1.fc33 | 23 Mar 202101:34 | – | fedora |
| [SECURITY] Fedora 34 Update: moodle-3.10.2-1.fc34 | 19 Mar 202120:34 | – | fedora |
 | Fedora 33 : moodle (2021-431b232659) | 23 Mar 202100:00 | – | nessus |
10
Node
Node
[
{
"product": "moodle",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "Fixed in 3.10.2, 3.9.5, 3.8.8, 3.5.17"
}
]
}
]| Parameter | Position | Path | Description | CWE |
|---|---|---|---|---|
| $data->$keyname | request body | mod/feedback/classes/completion.php | Stored XSS path during feedback submission via HTML-sanitized input that is decoded on render, enabling stored XSS and potential blind SSRF | CWE-79 |
| value | request body | mod/feedback/classes/completion.php | Stored XSS path during feedback submission via HTML-sanitized input that is decoded on render, enabling stored XSS and potential blind SSRF | CWE-79 |
| value | request body | mod/feedback/item/textfield/lib.php | Input processing for feedback textfield uses s($value) which applies HTML escaping, but decodes later, enabling stored XSS/SSRF via crafted payload | CWE-79 |
| textfield input | request body | mod/feedback/item/textfield/lib.php | Input processing for feedback textfield uses s($value) which applies HTML escaping, but decodes later, enabling stored XSS/SSRF via crafted payload | CWE-79 |
| val<id> (e.g., val1, val2) | nested | mod/feedback/classes/response_table.php | Rendering step decodes HTML entities (html_entity_decode) during download/view, enabling stored XSS to become active in output and potentially trigger blind SSRF | CWE-79 |
| $column | nested | mod/feedback/classes/response_table.php | Rendering step decodes HTML entities (html_entity_decode) during download/view, enabling stored XSS to become active in output and potentially trigger blind SSRF | CWE-79 |
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17 Jun 2026 03:33Current
5.1Medium risk
Vulners AI Score5.1
CVSS 23.5
CVSS 3.15.4
EPSS0.01277