Vulnerability Details : CVE-2021-4416
The wp-mpdf plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.5.1. This is due to missing or incorrect nonce validation on the mpdf_admin_savepost() function. This makes it possible for unauthenticated attackers to save post data via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Vulnerability category: Cross-site request forgery (CSRF)
Products affected by CVE-2021-4416
- cpe:2.3:a:wp-mpdf_project:wp-mpdf:*:*:*:*:*:wordpress:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-4416
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 19 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-4416
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
2.8
|
1.4
|
Wordfence |
CWE ids for CVE-2021-4416
-
The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.Assigned by: security@wordfence.com (Primary)
References for CVE-2021-4416
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https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/
Multiple WordPress plugins fixed CSRF vulnerabilities (part 3). – NinTechNetThird Party Advisory
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https://www.wordfence.com/threat-intel/vulnerabilities/id/c47386ee-25c8-4a77-92e8-5a82afc9c826?source=cve
wp-mpdf <= 3.5.1 - Cross-Site Request Forgery BypassThird Party Advisory
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https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/
Multiple WordPress plugins fixed CSRF vulnerabilities (part 5). – NinTechNetThird Party Advisory
-
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/
Multiple WordPress plugins fixed CSRF vulnerabilities (part 2). – NinTechNetThird Party Advisory
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https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/
25 WordPress plugins vulnerable to CSRF attacks. – NinTechNetThird Party Advisory
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https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/
Multiple WordPress plugins fixed CSRF vulnerabilities (part 4). – NinTechNetThird Party Advisory
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https://plugins.trac.wordpress.org/changeset/2549363/wp-mpdf/trunk/wp-mpdf.php
Changeset 2549363 for wp-mpdf/trunk/wp-mpdf.php – WordPress Plugin RepositoryPatch
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https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/
More WordPress plugins and themes vulnerable to CSRF attacks. – NinTechNetThird Party Advisory
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https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/
Multiple WordPress plugins fixed CSRF vulnerabilities (part 1). – NinTechNetThird Party Advisory
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