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.

Vulnerability in Melhorenvio Melhor Envio

CVE-2026-54804

Subscriber Broken Authentication in Melhor Envio <= 2.16.3 versions.

EPSS: 0.003 (19.5th percentile) — read the EPSS interpretation.

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.

Affected products

Melhorenvio Melhor Envio — versions n/a

Weakness classification (CWE)

CWE-288 — Authentication Bypass Using an Alternate Path or Channel

References

audit@patchstack.com (vdb-entry)

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.