--- cve: "CVE-2026-55730" severity: "HIGH" cvss: 8.7 epss: "36%" vendor: "LOYTEC" kev: false exploited: false published: "2026-07-24 15:18:31" tags: [cve, security, high] source: tsecurity.de CVE-Dossier exported: "2026-09-05T21:39:49+02:00" --- # CVE-2026-55730 > 8.7 HIGH ## Beschreibung Reflected Cross-Site Scripting (CWE-79) in LWEB802 in Loytec LWEB-802 before 5.0.8 on all platforms allows an unauthenticated remote attacker to execute arbitrary JavaScript in a victim's browser and perform actions with the victim's privileges via a crafted link containing a malicious `project` or `mspParams` parameter. ## CVSS-Vektor ``` CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N ``` | Metrik | Wert | Bewertung | |---|---|---| | AV Angriffsvektor | Netzwerk | bad | | AC Komplexität | Gering | bad | | PR Privilegien | Keine | bad | ## Schwachstellen-Klasse - **CWE-79** — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. ## Angriffsmuster (CAPEC) - [CAPEC-63 — Cross-Site Scripting (XSS)](https://capec.mitre.org/data/definitions/63.html) _(Severity: Very High)_ - [CAPEC-85 — AJAX Footprinting](https://capec.mitre.org/data/definitions/85.html) _(Severity: Low)_ - [CAPEC-209 — XSS Using MIME Type Mismatch](https://capec.mitre.org/data/definitions/209.html) _(Severity: Medium)_ - [CAPEC-588 — DOM-Based XSS](https://capec.mitre.org/data/definitions/588.html) _(Severity: Very High)_ - [CAPEC-591 — Reflected XSS](https://capec.mitre.org/data/definitions/591.html) _(Severity: Very High)_ - [CAPEC-592 — Stored XSS](https://capec.mitre.org/data/definitions/592.html) _(Severity: Very High)_ ## Referenzen - --- _Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-55730) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_