Vulnerability · Published Aug 12, 2026 · Assigned by WPScan

CVE-2026-18044Estatik Real Estate Plugin < 4.3.4 - Unauthenticated Arbitrary-Recipient Mail Relay via Signed-Value Mismatch

Low 3.7

In plain English

A low-severity insufficient verification of data authenticity in Estatik Real Estate Plugin from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).

Severity (CVSS 3.1)3.7Low

Exploit odds (30 days)0.1%top 96.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Estatik Real Estate Plugin	0 – before 4.3.4

Weakness: CWE-345 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

References

https://wpscan.com/vulnerability/87623f1e-c0fa-4563-af13-68e51ba2d7a9/ exploit, vdb-entry, technical-description