HOMEVULNERABILITIESCVE-2023-6827
HIGH

CVE-2023-6827

CWE-434Published: December 15, 2023· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2023-6827 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

g5plus1 product(s)
essential real estate
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://plugins.trac.wordpress.org/changeset/3009780/essential-real-estate
PATCHhttps://plugins.trac.wordpress.org/changeset/3009780/essential-real-estate
ADVISORYhttps://www.wordfence.com/threat-intel/vulnerabilities/id/8bb2ce22-077b-41dd-a2ff-cc1db9d20d38?source=cve
ADVISORYhttps://www.wordfence.com/threat-intel/vulnerabilities/id/8bb2ce22-077b-41dd-a2ff-cc1db9d20d38?source=cve

All References (6)

→
https://plugins.trac.wordpress.org/browser/essential-real-estate/tags/4.3.5/lib/smart-framework/core/fonts/fonts.class.php#L524Product
→
https://plugins.trac.wordpress.org/changeset/3009780/essential-real-estatePatch
→
https://www.wordfence.com/threat-intel/vulnerabilities/id/8bb2ce22-077b-41dd-a2ff-cc1db9d20d38?source=cveThird Party Advisory
→
https://plugins.trac.wordpress.org/browser/essential-real-estate/tags/4.3.5/lib/smart-framework/core/fonts/fonts.class.php#L524Product
→
https://plugins.trac.wordpress.org/changeset/3009780/essential-real-estatePatch
→
https://www.wordfence.com/threat-intel/vulnerabilities/id/8bb2ce22-077b-41dd-a2ff-cc1db9d20d38?source=cveThird Party Advisory

Quick Facts

CVE IDCVE-2023-6827
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-434
CISA KEVNo
Affected1 vendor(s)
PublishedDec 15, 2023

Related CVEs (CWE-434)

CVE-2024-0916
10.0
CVE-2024-32700
10.0
CVE-2026-45444
KEV10.0
CVE-2021-42645
10.0
CVE-2026-57700
KEV10.0
CVE-2024-34555
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-6827 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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