CVE-2026-49436

{"id": "CVE-2026-49436", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-49436", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-21T15:46:45.676388Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.3, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.1}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "Kovah", "product": "LinkAce", "versions": [{"status": "affected", "version": "< 2.5.7"}]}]}], "published": "2026-08-20T22:17:20.240", "references": [{"url": "https://github.com/Kovah/LinkAce/commit/642ac520347205a8277668bcae269bdc21223eae", "source": "security-advisories@github.com"}, {"url": "https://github.com/Kovah/LinkAce/security/advisories/GHSA-6r73-pchm-4m39", "source": "security-advisories@github.com"}, {"url": "https://github.com/Kovah/LinkAce/security/advisories/GHSA-6r73-pchm-4m39", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Received", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "LinkAce is a self-hosted archive to collect website links. Prior to version 2.5.7, the Bulk Link API endpoint (`POST /api/v2/bulk/links`) accepts URLs without any format validation, allowing an authenticated user to store a `javascript:` URI. The stored URI is later rendered verbatim as an `href` in Blade templates, and clicking it executes arbitrary JavaScript in the victim's browser \u2014 exfiltrating cookies and session tokens. Version 2.5.7 fixes the issue."}], "lastModified": "2026-08-21T16:17:18.323", "sourceIdentifier": "security-advisories@github.com"}