CVE-2026-18044 json
Estatik Real Estate Plugin < 4.3.4 - Unauthenticated Arbitrary-Recipient Mail Relay via Signed-Value Mismatch
published 2026-08-12 2 mo ago modified 2026-08-26 2 mo ago also EUVD-2026-57177
- cvss
- 3.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 3%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Unknown Estatik Real Estate Plugin 4.3.4
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/87623f1e-c0fa-4563-af13-68e51ba2d7a9/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N |
Affected products
- Unknown Estatik Real Estate Plugin
Classification
- Weakness
-
- CWE-345 Insufficient Verification of Data Authenticity
- Technology feeds
References
-
wpscan.com
/vulnerability/87623f1e-c0fa-4563-af13-68e51ba2d7a9/
exploit, vdb-entry, technical-description
Sources
- CVE List CVE-2026-18044
- NVD CVE-2026-18044
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.