{"id":"CVE-2026-49436","aliases":["GHSA-6r73-pchm-4m39"],"url":"https://o3.security/vulnerability/CVE-2026-49436","summary":"LinkAce vulnerable to stored XSS via 'javascript:' URI in Bulk Link API","details":"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 — exfiltrating cookies and session tokens. Version 2.5.7 fixes the issue.","published":"2026-08-20T21:40:54.087Z","modified":"2026-08-22T03:49:39.521453950Z","cvss":{"score":7.3,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/Kovah/LinkAce/commit/642ac520347205a8277668bcae269bdc21223eae","label":"Kovah/LinkAce@642ac52"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49436.json"},{"type":"ADVISORY","url":"https://github.com/Kovah/LinkAce/security/advisories/GHSA-6r73-pchm-4m39"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49436"},{"type":"FIX","url":"https://github.com/Kovah/LinkAce/commit/642ac520347205a8277668bcae269bdc21223eae"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-22T03:49:39.521453950Z"}}