CVE-2026-55730

HIGHPre-NVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 72% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 4 sources updated this week
8.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.7Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
8.7
EG Score
8.7(medium)
EG Risk
54(Track)
EG Risk 54/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity87% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

July 24, 2026

Last Modified

July 27, 2026

Advisory Details (1)

Auto-updated Jul 24, 2026
No patch confirmed yet.
generic

DIBT-CVE 20260601-0002 Reflected Cross-Site Scripting (XSS) (HIGH)

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

Vendor Advisories for CVE-2026-55730(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 12× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-27 20:43 UTCGHSA enrichment
  2. 2026-07-27 17:34 UTCEG score recompute
  3. 2026-07-27 17:34 UTCGHSA enrichment
  4. 2026-07-27 04:44 UTCGHSA enrichment
  5. 2026-07-26 15:52 UTCEG score recompute
  6. 2026-07-26 15:51 UTCGHSA enrichment
  7. 2026-07-26 14:54 UTCEPSS rescore
  8. 2026-07-26 03:02 UTCEG score recompute
  9. 2026-07-26 03:01 UTCGHSA enrichment
  10. 2026-07-25 14:18 UTCEPSS rescore
  11. 2026-07-24 14:27 UTCEG score recompute
  12. 2026-07-24 14:26 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-55730?
CVE-2026-55730 is a high vulnerability published on July 24, 2026. 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…
When was CVE-2026-55730 disclosed?
CVE-2026-55730 was first published in the National Vulnerability Database on July 24, 2026, with the most recent update on July 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55730 actively exploited?
CVE-2026-55730 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 71.7% of all scored CVEs.
What is the CVSS score of CVE-2026-55730?
CVE-2026-55730 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-55730?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55730, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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