What is CVE-2023-4811?

CVE-2023-4811 is a medium-severity vulnerability in Iptanus WordPress File Upload, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 5.4/10. Published 2023-10-16.

How severe is CVE-2023-4811?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2023-4811 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Iptanus WordPress File Upload

CVE-2023-4811

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.

Published 2023-10-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (30.9th percentile), scored 2026-09-28.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Iptanus WordPress File Upload
WordPress File Upload — versions 0

Public proof-of-concept exploits

20142995/nuclei-templates

References

wpscan.com/vulnerability/7f9271f2-4de4-4be3-8746-2a3f149eb1d1 (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2023-4811?: CVE-2023-4811 is a medium-severity vulnerability in Iptanus WordPress File Upload, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 5.4/10. Published 2023-10-16.
How severe is CVE-2023-4811?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2023-4811 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.