Essential Real Estate <= 4.3.5 — Authenticated (Subscriber+) Arbitrary File Upload
CVE-2023-6827Published · Updated Action summary
Affected: ≤4.3.5Update to 4.4.0 or newer
All remediation steps- Severity
- High7.5
- CVSS
- 7.5CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:HAttack complexity- High
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-434 Arbitrary File Upload
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Essential Real Estate essential-real-estate
- Affected≤ 4.3.5
- Patched in4.4.0
Update to 4.4.0 or newer.
You are affected if you run ≤ 4.3.5. Version 4.4.0 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Essential Real Estate.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 4.4.0, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Essential Real Estate to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to István Márton.
The Essential Real Estate plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation on the 'ajaxUploadFonts' function in versions up to, and including, 4.3.5. This makes it possible for authenticated attackers with subscriber-level capabilities or above, to upload arbitrary files on the affected site's server which may make remote code execution possible. CVE-2023-6140 appears to be a duplicate of this issue.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Essential Real Estate
All 21| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium4.3 | 5.3.4 - Authenticated (Subscriber+) Insecure Direct Object Reference 4.4.3 – 5.3.4Update to 5.3.5 | CVE-2026-110964 | |
| Medium5.3 | Missing Authorization ≤5.3.4Update to 5.3.5 | CVE-2026-90964 | |
| Medium4.3 | Missing Authorization ≤5.3.4Update to 5.3.5 | CVE-2026-90966 | |
| Medium4.3 | Authenticated (Customer+) Insecure Direct Object Reference ≤5.3.4Update to 5.3.5 | CVE-2026-90967 | |
| Medium5.3 | Unauthenticated Information Exposure ≤5.3.4Update to 5.3.5 | CVE-2026-90963 |
- Medium4.35.3.4 - Authenticated (Subscriber+) Insecure Direct Object Reference
4.4.3 – 5.3.4Update to 5.3.5
- Medium5.3Missing Authorization
≤5.3.4Update to 5.3.5
- Medium4.3Missing Authorization
≤5.3.4Update to 5.3.5
- Medium4.3Authenticated (Customer+) Insecure Direct Object Reference
≤5.3.4Update to 5.3.5
- Medium5.3Unauthenticated Information Exposure
≤5.3.4Update to 5.3.5
Same weakness (Arbitrary File Upload)
All Arbitrary File Upload| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity high, CVSS 7.5
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.