CVE-2026-28005Network attack vector

Unauthenticated privilege escalation through missing authorization

Published Aug 6, 2026 · Updated Aug 6, 2026

Privilege escalation in Nexcess Kadence WooCommerce Email Designer 1.5.19 and earlier allows remote attackers to gain elevated access. The CNA does not disclose the affected endpoint, authorization operation, resulting role, or whether an account is created or modified; the upstream changelog only identifies stricter email-preview checks. No account or user interaction is required, but the exact post-escalation capability remains undisclosed.

CVSS severity9.8
Critical
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Nexcess Kadence WooCommerce Email Designer 1.5.19 and earlier allows remote attackers to gain elevated access. The CNA does not disclose the affected endpoint, authorization operation, resulting role, or whether an account is created or modified; the upstream changelog only identifies stricter email-preview checks. No account or user interaction is required, but the exact post-escalation capability remains undisclosed.

The record

CVE
CVE-2026-28005
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
The Events Calendar
Product
Kadence WooCommerce Email Designer
Classifications
CWE-862, CAPEC-1, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=1.5.19 changes=[{"at":"1.5.19.1","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Events Calendar · Kadence WooCommerce Email Designerversion=n/a <=1.5.19 changes=[{"at":"1.5.19.1","status":"unaffected"}]

Published CVSS scores

9.8PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
CAPEC-1Accessing Functionality Not Properly Constrained by ACLs
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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