Vulnerability in Melhorenvio Melhor Envio

CVE-2026-54804

Subscriber Broken Authentication in Melhor Envio <= 2.16.3 versions.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H.

EPSS exploit prediction

EPSS: 0.004 (27.8th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-54804: held from 0.003 to 0.004.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-54804?
CVE-2026-54804 is a high-severity vulnerability in Melhorenvio Melhor Envio, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 7.6/10. Published 2026-06-17.
How severe is CVE-2026-54804?
High severity. CVSS v3 base score is 7.6 out of 10.