WordPress Gallery Plugin – NextGEN Gallery <= 3.4.7 — Cross-Site Request Forgery to Arbitrary File Upload
CVE-2020-35943Published · Updated Action summary
Affected: ≤3.4.7Update to 3.5.0 or newer
All remediation steps- Severity
- High8.8
- CVSS
- 8.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:RUser interaction- Required
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-352 CSRF
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery nextgen-gallery
- Affected≤ 3.4.7
- Patched in3.5.0
Update to 3.5.0 or newer.
You are affected if you run ≤ 3.4.7. Version 3.5.0 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 3.5.0, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Ram.
A Cross-Site Request Forgery (CSRF) issue in the NextGEN Gallery plugin before 3.5.0 for WordPress allows File Upload. (It is possible to bypass CSRF protection by simply not including a nonce parameter.)
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery
All 54| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High8.1 | Authenticated (Custom+) Arbitrary File Deletion via 'task_list' and 'app_config' Parameters ≤4.5.5Update to 4.5.6 | CVE-2026-118191 | |
| High8.8 | Authenticated (Custom+) Remote Code Execution via XML-RPC 'meta_data' Mass Assignment and Path Traversal ≤4.4.1Update to 4.5.0 | CVE-2026-76010 | |
| Medium5.4 | Unauthenticated Stored DOM-Based Cross-Site Scripting via Comment `title` Attribute via Shutter Lightbox innerHTML ≤4.5.4Update to 4.5.5 | CVE-2026-116563 | |
| High7.5 | Authenticated (Custom+) Local File Inclusion via Lightroom 'gallery_edit' Task property_list + Image Upload ≤4.4.1Update to 4.5.0 | CVE-2026-76012 | |
| High7.5 | Unauthenticated Arbitrary File Read ≤4.5.0Update to 4.5.1 | CVE-2026-94123 |
- High8.1Authenticated (Custom+) Arbitrary File Deletion via 'task_list' and 'app_config' Parameters
≤4.5.5Update to 4.5.6
- High8.8Authenticated (Custom+) Remote Code Execution via XML-RPC 'meta_data' Mass Assignment and Path Traversal
≤4.4.1Update to 4.5.0
- Medium5.4Unauthenticated Stored DOM-Based Cross-Site Scripting via Comment `title` Attribute via Shutter Lightbox innerHTML
≤4.5.4Update to 4.5.5
- High7.5Authenticated (Custom+) Local File Inclusion via Lightroom 'gallery_edit' Task property_list + Image Upload
≤4.4.1Update to 4.5.0
- High7.5Unauthenticated Arbitrary File Read
≤4.5.0Update to 4.5.1
Same weakness (CSRF)
All CSRF| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity high, CVSS 8.8
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.