CVE-2026-55730: Loytec LWEB802: Reflected Cross-Site Scripting in LWEB802

Severity: high (CVSS 8.7 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-24 · updated 2026-10-24
Weakness: CWE-79

Description

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.

Affected products

Loytec LWEB-802: before 5.0.8 — fixed in 5.0.8

How to fix

Upgrade to a fixed version: Loytec LWEB-802 5.0.8. Check the vendor advisory for mitigations.

References

https://www.loytec.com/support/product-security/advisories/8527-dibt-cve-20260601-0002-reflected-cross-site-scripting-xss-high

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