BAN Users <= 1.5.3 - Missing Authorization to Authenticated (Subscriber+) Settings Update & Privilege Escalation

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Summary

CVECVE-2023-4153
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-09-13 03:15:08 UTC
Updated2026-04-08 19:18:29 UTC
DescriptionThe BAN Users plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 1.5.3 due to a missing capability check on the 'w3dev_save_ban_user_settings_callback' function. This makes it possible for authenticated attackers, with minimal permissions such as a subscriber, to modify the plugin settings to access the ban and unban functionality and set the role of the unbanned user.

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

EPSS: 0.001070000 probability, percentile 0.289730000 (date 2026-04-09)

Problem Types: CWE-266 | CWE-266 CWE-266 Incorrect Privilege Assignment

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:N/AC:L/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 Webmedia Ban Users All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Webxmedia BAN Users affected 1.5.3 semver Not specified

References

ReferenceSourceLinkTags
403 Forbidden af854a3a-2127-422b-91ae-364da2661108 plugins.trac.wordpress.org Broken Link
403 Forbidden af854a3a-2127-422b-91ae-364da2661108 plugins.trac.wordpress.org Broken Link
BAN Users <= 1.5.3 - Missing Authorization to Authenticated (Subscriber+) Settings Update & Privilege Escalation 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
CNA2023-08-04T00:00:00.000ZDiscovered
CNA2023-08-04T00:00:00.000ZVendor Notified
CNA2023-09-12T00:00:00.000ZDisclosed

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