---
cve: "CVE-2026-45343"
severity: "HIGH"
cvss: 8.5
epss: "0.3%"
vendor: "Kovah"
kev: false
exploited: false
published: "2026-05-28 20:45:51"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-22T20:28:02+02:00"
---

# CVE-2026-45343

> 8.5 HIGH · 🧪 PoC

## Beschreibung

LinkAce is a self-hosted archive to collect website links. Prior to 2.5.6, LinkAce contains a stored cross-site scripting vulnerability that allows a low-privilege user to execute arbitrary JavaScript in an administrator's browser session. This affects instances configured with SSO/OAuth authentication, which is one of the supported authentication methods in LinkAce. An attacker who sets their OAuth display name to a malicious script and then creates an API token will plant a persistent XSS payload in the audit log. When any admin navigates to /system/audit, the payload executes in the admin's browser context. This enables session cookie theft, CSRF token exfiltration (exposed in the la-app-data meta tag), or any other action the admin can perform. This vulnerability is fixed in 2.5.6.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |

## Patch verfügbar (OSV)

- ae0afc338ac8b76541110470ecacd89e862de3c8 (Commit)

## Referenzen

- <https://github.com/Kovah/LinkAce/security/advisories/GHSA-jx4g-ph82-x9mm>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-45343) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_