wp-mpdf <= 3.5.1 - Cross-Site Request Forgery Bypass
Priority LOW 20CWE-352Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-352.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00384 32nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| fkrauthan | wp-mpdf | up to 3.5.1 | — | No fix listed | CNA |
- wp-mpdf Vendorfkrauthan Affected up to 3.5.1 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:wp-mpdf_project:wp-mpdf:*:*:*:*:*:wordpress:*:* | up to 3.5.1 | Vulnerable | Wp-mpdf Project |
- cpe:2.3:a:wp-mpdf_project:wp-mpdf:*:*:*:*:*:wordpress:*:* Versions up to 3.5.1 Vulnerable ·Wp-mpdf Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-4416
- 2026-10-03 Alias added: GHSA-pmjg-6h25-mhp4
References
Advisory 8
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c47386ee-25c8-4a77-92e8-5a82afc9c826?source=cve
- https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/
- https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/
More fkrauthan vulnerabilities
- TI-2008-02426 Directory traversal vulnerability in admin/admin_frame.php in Phoenix View CMS Pre Alpha2… CVSS 2.0HIGH 7.5
- TI-2008-02427 Multiple SQL injection vulnerabilities in Phoenix View CMS Pre Alpha2 and earlier allow… CVSS 2.0HIGH 7.5
- TI-2024-18565 WordPress wp-mpdf plugin <= 3.7.1 - Reflected Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
- TI-2025-37406 WordPress wp-mpdf Plugin <= 3.9.1 - Cross Site Scripting (XSS) Vulnerability CVSS 3.1MEDIUM 6.5
- TI-2008-02425 Multiple cross-site scripting (XSS) vulnerabilities in Phoenix View CMS Pre Alpha2 and… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2021-4416 · CVE Program
- CVE-2021-4416 · NVD
- FIRST EPSS
- GHSA-pmjg-6h25-mhp4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences