CVE-2026-49436CWE-79cross-site-scripting

CVE-2026-49436

High · published August 21, 2026

CVSS v3.1

7.3

EPSS

Percentile

29.3

In the wild

Unconfirmed

What it is

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.

The record

Technical detail

CVSS v3.1: 7.3 · HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0: Not supplied
EPSS: 0.00367 · 29.3th percentile
Weakness: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published: 2026-08-21T02:17Z

References (3)

https://github.com/Kovah/LinkAce/commit/642ac520347205a8277668bcae269bdc21223eae · [email protected]https://github.com/Kovah/LinkAce/security/advisories/GHSA-6r73-pchm-4m39 · [email protected]https://github.com/Kovah/LinkAce/security/advisories/GHSA-6r73-pchm-4m39 · 134c704f-9b21-4f2e-91b3-4a467353bcc0

EPSS history

Timeline

20 AUG 21:40Z
LinkAce vulnerable to stored XSS via 'javascript:' URI in Bulk Link API
cvelistv5