CVE-2026-49436LinkAce vulnerable to stored XSS via 'javascript:' URI in Bulk Link API
Updated under an hour ago ()
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It affects Kovah LinkAce. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.3 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Aug 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Kovah LinkAce kovah:linkace (from the name) | before 2.5.7 | CNA record |
References
- https://github.com/Kovah/LinkAce/security/advisories/GHSA-6r73-pchm-4m39x-refsource-confirm
- https://github.com/Kovah/LinkAce/commit/642ac520347205a8277668bcae269bdc21223eaex-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.