CVE-2026-55730
Reflected XSS in Loytec LWEB-802 (<5.0.8) enabling JS execution via crafted links.
Is CVE-2026-55730 being exploited?
Not confirmed. CVE-2026-55730 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.36% probability of exploitation in the next 30 days.
How severe is CVE-2026-55730?
CVE-2026-55730 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-55730?
Yes. A fix has been recorded for CVE-2026-55730. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-55730 affect?
CVE-2026-55730 affects Loytec LWEB-802 (all platforms) < 5.0.8. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-55730?
Update LWEB-802 to 5.0.8; block public web UI and monitor logs if patch delayed.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated reflected XSS allows remote execution of JavaScript via crafted 'project' or 'mspParams' links, enabling session hijack and actions as the victim in the web UI.
Immediate action required
- affected< 5.0.8
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.