6.1
MEDIUM
CVE-2023-4520
"Flowplayer WordPress Stored XSS & Arbitrary Usermeta Update"
Description

The FV Flowplayer Video Player plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘_fv_player_user_video’ parameter saved via the 'save' function hooked via init, and the plugin is also vulnerable to Arbitrary Usermeta Update via the 'save' function in versions up to, and including, 7.5.37.7212 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page, and makes it possible to update the user metas arbitrarily, but the meta value can only be a string.

INFO

Published Date :

Aug. 25, 2023, 3:15 a.m.

Last Modified :

Nov. 7, 2023, 4:22 a.m.

Remotely Exploitable :

Yes !

Impact Score :

2.7

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2023-4520 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Foliovision fv_flowplayer_video_player
References to Advisories, Solutions, and Tools

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-4520 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-4520 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Removed CWE Wordfence CWE-79
  • Initial Analysis by [email protected]

    Aug. 30, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    Changed Reference Type https://plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/tags/7.5.36.7212/models/custom-videos.php#L341 No Types Assigned https://plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/tags/7.5.36.7212/models/custom-videos.php#L341 Product
    Changed Reference Type https://plugins.trac.wordpress.org/changeset/2957322/fv-wordpress-flowplayer#file2 No Types Assigned https://plugins.trac.wordpress.org/changeset/2957322/fv-wordpress-flowplayer#file2 Patch
    Changed Reference Type https://www.wordfence.com/threat-intel/vulnerabilities/id/c55ca7d4-6bc0-49c9-8ce0-50fff8775a76?source=cve No Types Assigned https://www.wordfence.com/threat-intel/vulnerabilities/id/c55ca7d4-6bc0-49c9-8ce0-50fff8775a76?source=cve Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:foliovision:fv_flowplayer_video_player:*:*:*:*:*:wordpress:*:* versions up to (including) 7.5.37.7212
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-4520 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-4520 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.10 }} 0.01%

score

0.40958

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability