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CVE-2025-67850— Moodle: moodle: cross-site scripting vulnerability via inadequate input filtering in formula editor

Quick assessment

Affected
CVE-2025-67850
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Moodle是Moodle开源的一套免费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存在安全漏洞，该漏洞源于公式编辑器的算术表达式字段对用户提供的数据检查不足，可能导致跨站脚本攻击、数据泄露或未经授权的操作。

CVSS 7.3 · High EPSS 0.27% · P18

Possible ATT&CK Techniques 1 AI

T1059.001 · PowerShell

I. Basic Information for CVE-2025-67850

Vulnerability Information
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Vulnerability Title
Moodle: moodle: cross-site scripting vulnerability via inadequate input filtering in formula editor
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in moodle. This vulnerability, known as Cross-Site Scripting (XSS), occurs due to insufficient checks on user-provided data in the formula editor's arithmetic expression fields. A remote attacker could inject malicious code into these fields. When other users view these expressions, the malicious code would execute in their web browsers, potentially compromising their data or leading to unauthorized actions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Moodle 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Moodle是Moodle开源的一套免费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存在安全漏洞，该漏洞源于公式编辑器的算术表达式字段对用户提供的数据检查不足，可能导致跨站脚本攻击、数据泄露或未经授权的操作。
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)

II. Public POCs for CVE-2025-67850

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III. Intelligence Information for CVE-2025-67850

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Vendor Advisories for CVE-2025-67850 (2)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2025-67850

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