CVE-2023-4811: WordPress File Upload < 4.23.3 - Author+ Stored Cross-Site Scripting

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-10-16 · updated 2026-06-17

Description

The WordPress File Upload WordPress plugin before 4.23.3 does not sanitise and escape some of its settings, which could allow high privilege users such as contributors to perform Stored Cross-Site Scripting attacks.

Affected products

nickboss Iptanus File Upload: before 4.23.3 — fixed in 4.23.3

How to fix

Upgrade to a fixed version: nickboss Iptanus File Upload 4.23.3. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/7f9271f2-4de4-4be3-8746-2a3f149eb1d1
https://wpscan.com/vulnerability/7f9271f2-4de4-4be3-8746-2a3f149eb1d1

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