CVE-2021-3943
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I. Basic Information for CVE-2021-3943
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. A remote code execution risk when restoring backup files was identified.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Moodle 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Moodle是一套免费、开源的电子学习软件平台，也称课程管理系统、学习管理系统或虚拟学习环境。 Moodle 存在输入验证错误漏洞，该漏洞源于软件恢复备份文件的时候存在问题，攻击者可以通过构造错误格式的备份文件，当恢复备份文件时可能导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | moodle | moodle 3.11.4, moodle 3.10.8 and moodle 3.9.11 | - |
II. Public POCs for CVE-2021-3943
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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- https://moodle.org/mod/forum/discuss.php?d=429095x_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=2021963x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-3943
Same Patch Batch · n/a · 2021-11-22 · 30 CVEs total
| CVE-2021-23732 | 9.0 CRITICAL | Arbitrary Code Execution |
| CVE-2021-23718 | 6.5 MEDIUM | Server-side Request Forgery (SSRF) |
| CVE-2021-23673 | 5.4 MEDIUM | Cross-site Scripting (XSS) |
| CVE-2021-38378 | Open-xchange OX App Suite 安全漏洞 | |
| CVE-2021-44079 | Wazuh 命令注入漏洞 | |
| CVE-2021-33488 | Open-xchange OX App Suite 输入验证错误漏洞 | |
| CVE-2021-33489 | Open-xchange OX App Suite 跨站脚本漏洞 | |
| CVE-2021-33490 | Open-xchange OX App Suite 跨站脚本漏洞 | |
| CVE-2021-33491 | Open-xchange OX App Suite 路径遍历漏洞 | |
| CVE-2021-33492 | Open-xchange OX App Suite 跨站脚本漏洞 | |
| CVE-2021-33493 | Open-xchange OX App Suite 代码注入漏洞 | |
| CVE-2021-33494 | Open-xchange OX App Suite 跨站脚本漏洞 | |
| CVE-2021-33495 | Open-xchange OX App Suite 跨站脚本漏洞 | |
| CVE-2021-38146 | Wipro Holmes Orchestrator 路径遍历漏洞 | |
| CVE-2021-38374 | Open-xchange OX App Suite 跨站脚本漏洞 | |
| CVE-2021-38375 | Open-xchange OX App Suite 跨站脚本漏洞 | |
| CVE-2021-38376 | Open-xchange OX App Suite 授权问题漏洞 | |
| CVE-2021-38377 | Open-xchange OX App Suite 安全特征问题特征问题漏洞 | |
| CVE-2020-22719 | Shimo Document 跨站脚本漏洞 | |
| CVE-2021-43581 | Open Design Alliance Drawings SDK 缓冲区错误漏洞 |
Showing top 20 of 30 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: moodle
- CVE-2021-47857
Moodle 3.10.3 - 'label' Persistent Cross Site Scripting - CVE-2025-53021
Moodle 授权问题漏洞 - CVE-2025-26533
SQL injection risk in course search module list filter - CVE-2025-26532
Teachers can evade trusttext config when restoring glossary - CVE-2025-26531
IDOR in badges allows disabling of arbitrary badges
Same vendor: n/a
- CVE-2026-8276
bettercap MySQL Server mysql_server.go integer coercion - CVE-2026-8275
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Open5GS SMF ogs_nas_parse_qos_rules denial of service - CVE-2026-8269
Open5GS SMF smf_nsmf_handle_create_sm_context denial of serv - CVE-2026-8268
Open5GS SMF OpenAPI_list_create denial of service
Same weakness: CWE-20
V. Comments for CVE-2021-3943
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