Vulnerability Details : CVE-2021-24208
The editor of the WP Page Builder WordPress plugin before 1.2.4 allows lower-privileged users to insert unfiltered HTML, including JavaScript, into pages via the “Raw HTML” widget and the “Custom HTML” widgets (though the custom HTML widget requires sending a crafted request - it appears that this widget uses some form of client side validation but not server side validation), all of which are added via the “page_builder_data” parameter when performing the “wppb_page_save” AJAX action. It is also possible to insert malicious JavaScript via the “wppb_page_css” parameter (this can be done by closing out the style tag and opening a script tag) when performing the “wppb_page_save” AJAX action.
Vulnerability category: Cross site scripting (XSS)
Exploit prediction scoring system (EPSS) score for CVE-2021-24208
Probability of exploitation activity in the next 30 days: 0.06%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 23 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-24208
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:P/A:N |
6.8
|
2.9
|
NIST |
|
5.4
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
2.3
|
2.7
|
NIST |
CWE ids for CVE-2021-24208
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by:
- contact@wpscan.com (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2021-24208
-
https://www.themeum.com/wp-page-builder-updated-v1-2-4/
WP Page Builder Updated: Security Issues Fixed (Thanks to Wordfence) - ThemeumPatch;Vendor Advisory
-
https://wpscan.com/vulnerability/c20e243d-b0de-4ae5-9a0d-b9d02c9b8141
Attention Required! | CloudflareExploit;Third Party Advisory
Products affected by CVE-2021-24208
- cpe:2.3:a:themeum:wp_page_builder:*:*:*:*:*:wordpress:*:*