CVE-2023-4636

Name: CVE-2023-4636
Creator: NVD / NIST
Published: 2023-09-05T03:15:12.293+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.88%

Last modified Jun 17, 2026

CVE-2023-4636 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. The WordPress File Sharing Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in versions up to, and including, 2.0.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. EPSS estimates a 0.88% chance of exploitation in the next 30 days.

Description

The WordPress File Sharing Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in versions up to, and including, 2.0.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Metrics

CVSS 3.1

4.8/10

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

EPSS Probability

0.88%

54.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Userprivatefiles	Wordpress File Sharing Plugin	<= 2.0.3

References

https://github.com/xsn1210/vul2/blob/main/xss%5BWordPressFile%5D%20.mdExploit, Third Party Advisory
https://plugins.trac.wordpress.org/changeset/2961909/user-private-filesPatch
https://www.wordfence.com/threat-intel/vulnerabilities/id/1df04293-87e9-4ab4-975d-54d36a993ab0?source=cveThird Party Advisory
https://github.com/xsn1210/vul2/blob/main/xss%5BWordPressFile%5D%20.mdExploit, Third Party Advisory
https://plugins.trac.wordpress.org/changeset/2961909/user-private-filesPatch
https://www.wordfence.com/threat-intel/vulnerabilities/id/1df04293-87e9-4ab4-975d-54d36a993ab0?source=cveThird Party Advisory

Timeline

Published: Sep 5, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-4636?

How severe is CVE-2023-4636?

CVE-2023-4636 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.88% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4636?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-4636?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST