CVE-2026-49436
LinkAce vulnerable to stored XSS via 'javascript:' URI in Bulk Link API
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
LinkAce vulnerable to stored XSS via 'javascript:' URI in Bulk Link API
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.
- Record
CVE-2026-49436- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2026-63686
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.
- Record
EUVD-2026-63686- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-49436- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
LinkAce vulnerable to stored XSS via 'javascript:' URI in Bulk Link API
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.
- Record
CVE-2026-49436- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-49436 is a high vulnerability (CVSS 7.3) in Kovah Linkace, published August 20, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 30th percentile. No source names a fixed version.