How severe is CVE-2023-4153?

CVE-2023-4153 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-4153 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4153?

CVE-2023-4153 affects Webmedia Ban Users. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4153?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-4153 published?

CVE-2023-4153 was published on 2023-09-13 and last updated on 2026-06-17.

CVE-2023-4153

CVE-2023-4153 is a high-severity vulnerability in Webmedia Ban Users with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-266.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-266
Affected product: Webmedia Ban Users
Published: 2023-09-13
Last modified: 2026-06-17

Description

The 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.

Frequently asked questions

What is CVE-2023-4153?: The 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.
How severe is CVE-2023-4153?: CVE-2023-4153 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-4153 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4153?: CVE-2023-4153 affects Webmedia Ban Users. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4153?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-4153 published?: CVE-2023-4153 was published on 2023-09-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:webmedia:ban_users:*:*:*:*:*:wordpress:*:*

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