CVE-2026-18044

Estatik Real Estate Plugin < 4.3.4 - Unauthenticated Arbitrary-Recipient Mail Relay via Signed-Value Mismatch

Published Aug 12, 2026 CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed
Description
The Estatik Real Estate Plugin WordPress plugin before 4.3.4 does not validate the same recipient list that it later uses to address the message sent by its property request form, allowing unauthenticated users to send emails to arbitrary recipients with arbitrary subject, body and Reply-To on sites where the form is configured to route to a custom address.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Weaknesses CWE-345
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description The Estatik Real Estate Plugin WordPress plugin before 4.3.4 does not validate the same recipient list that it later uses to address the message sent by its property request form, allowing unauthenticated users to send emails to arbitrary recipients with arbitrary subject, body and Reply-To on sites where the form is configured to route to a custom address.
Title Estatik Real Estate Plugin < 4.3.4 - Unauthenticated Arbitrary-Recipient Mail Relay via Signed-Value Mismatch
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N'}

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Aug 12, 2026, 12:08 PM
Reserved
Jul 28, 2026, 9:38 AM
Status
Deferred
Published
Aug 12, 2026, 12:17 PM
Modified
Aug 26, 2026, 4:30 PM