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CVE-2026-18044

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

CVSS score

3.7

EPSS probability

%0.1

Risk score

0.0

Published

2 mo ago

Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

Estatik Real Estate Plugin < 4.3.4 - Unauthenticated Email Relay Vulnerability

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%50

Short explanation

The Estatik Real Estate Plugin before 4.3.4 suffers from an unauthenticated email relay vulnerability due to signed-value mismatch. CVSS score is 3.7 (LOW). No public exploit or active exploitation is reported. Patch status is UNKNOWN. No known mitigation exists.

Why does it matter?

This vulnerability enables attackers to send spoofed emails to any recipient, potentially leading to phishing or spam campaigns. While the impact is limited to email content, it can be leveraged for social engineering attacks. No patch status is confirmed, and no mitigation is available.

What should be done?

  • Upgrade to version 4.3.4 or later of the Estatik Real Estate Plugin.
  • Follow official vendor advisories for patch details.
  • No known workaround or mitigation exists.
Note on uncertainty

The sources give limited detail on some technical conditions. Review the chain of evidence below before deciding how to act.

Chain of evidence and sources3 verified claims

Estatik Real Estate Plugin 4.3.4'ten önceki sürümleri, malzeme isteği formu üzerindeki imzalı değer eşleşmesi hatası nedeniyle, kimlik doğrulama olmadan herhangi bir alıcıya e-posta gönderme özelliğine sahiptir. Bu hata, CVSS puanı 3.7 ve düşük önemle sınıflandırılır.

Kullanıcı tarafından açık bir istismar veya aktif istismar raporlanmamıştır. Yama durumu, üretici bilgilerinin eksik olması nedeniyle UNKNOWN olarak belirlenmiştir.

Bu ele geçirme, Estatik Real Estate Plugin 4.3.4'ten önceki sürümleriyle çalışan WordPress sitelerine etki eder ve bilinen bir atılım ya da çözüm yoktur.

Show the technical text from the sources

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.

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

CWE: CWE-345

Explanation produced with the local qwen3:4b-instruct model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-18044 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1UnknownEstatik Real Estate Plugin View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
3.7CVSS V3_1LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:NCVE CNA
3.7CVSS V31LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:NNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-18044 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-18044 weaknesses.

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

CVSS Vector Radar Chart

3.7 / 10
Attack VectorNetworkComplexityHighPrivilegesNoneUser Interact.NoneConfidentialityHighIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)High
Integrity (Bütünlük)None
Availability (Erişilebilirlik)None

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

U
Unknown logo
Unknown

Weakness Type (CWE & CAPEC)

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