Essential Real Estate <= 4.3.5 - Authenticated (Subscriber+) Arbitrary File Upload

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Summary

CVECVE-2023-6827
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-12-15 08:15:46 UTC
Updated2026-04-08 18:18:43 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

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

Problem Types: CWE-434 | CWE-434 CWE-434 Unrestricted Upload of File with Dangerous Type

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application G5plus Essential Real Estate All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA G5theme Essential Real Estate affected 4.3.5 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/changeset/3009780/essential-real-estate af854a3a-2127-422b-91ae-364da2661108 plugins.trac.wordpress.org Patch
plugins.trac.wordpress.org/browser/essential-real-estate/tags/4.3.5/lib/smart-framework/... af854a3a-2127-422b-91ae-364da2661108 plugins.trac.wordpress.org Product
www.wordfence.com/threat-intel/vulnerabilities/id/8bb2ce22-077b-41dd-a2ff-cc1db... af854a3a-2127-422b-91ae-364da2661108 www.wordfence.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: István Márton (en)

Additional Advisory Data

SourceTimeEvent
CNA2023-12-12T00:00:00.000ZDiscovered
CNA2023-12-12T00:00:00.000ZVendor Notified
CNA2023-12-14T00:00:00.000ZDisclosed
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