WordPress Melhor Envio plugin <= 2.16.3 - Broken Authentication vulnerability

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Summary

CVECVE-2026-54804
StatePUBLISHED
AssignerPatchstack
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-17 13:20:51 UTC
Updated2026-06-17 17:17:26 UTC
DescriptionSubscriber Broken Authentication in Melhor Envio <= 2.16.3 versions.

Risk And Classification

Primary CVSS: v3.1 7.6 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

EPSS: 0.002820000 probability, percentile 0.197590000 (date 2026-06-24)

Problem Types: CWE-288 | CWE-288 CWE-288 Authentication Bypass Using an Alternate Path or Channel

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.6HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
3.1CNACVSS7.6HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Melhorenvio Melhor Envio affected n/a 2.16.3 custom Not specified

References

ReferenceSourceLinkTags
patchstack.com/database/wordpress/plugin/melhor-envio-cotacao/vulnerability/... [email protected] patchstack.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: HieuPenguinnn | Patchstack Bug Bounty Program (en)

Additional Advisory Data

Solutions

CNA: Update the WordPress Melhor Envio Plugin to the latest available version (at least 2.16.4).

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