CVE-2021-39202
WordPress Stored XSS Vulnerability in Widgets Editor
Description
WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. In affected versions the widgets editor introduced in WordPress 5.8 beta 1 has improper handling of HTML input in the Custom HTML feature. This leads to stored XSS in the custom HTML widget. This has been patched in WordPress 5.8. It was only present during the testing/beta phase of WordPress 5.8.
INFO
Published Date :
Sept. 9, 2021, 10:15 p.m.
Last Modified :
Sept. 24, 2021, 1:53 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.7
Exploitability Score :
2.3
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-39202.
| URL | Resource |
|---|---|
| https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-fr6h-3855-j297 | Third Party Advisory |
| https://hackerone.com/reports/1222797 | Permissions Required |
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-2021-39202 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-39202 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.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Sep. 24, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:S/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Changed Reference Type https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-fr6h-3855-j297 No Types Assigned https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-fr6h-3855-j297 Third Party Advisory Changed Reference Type https://hackerone.com/reports/1222797 No Types Assigned https://hackerone.com/reports/1222797 Permissions Required Added CPE Configuration OR *cpe:2.3:a:wordpress:wordpress:5.8:beta1:*:*:*:*:*:* *cpe:2.3:a:wordpress:wordpress:5.8:beta2:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-39202 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-2021-39202
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} 0.00%
score
0.20588
percentile