CVE-2020-35942

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-02-09 · updated 2026-06-17
Weakness: CWE-79

Description

A Cross-Site Request Forgery (CSRF) issue in the NextGEN Gallery plugin before 3.5.0 for WordPress allows File Upload and Local File Inclusion via settings modification, leading to Remote Code Execution and XSS. (It is possible to bypass CSRF protection by simply not including a nonce parameter.)

Affected products

Photo Gallery, Sliders, Proofing and Themes: before 3.5.0 — fixed in 3.5.0

How to fix

Upgrade to a fixed version: Photo Gallery, Sliders, Proofing and Themes 3.5.0. Check the vendor advisory for mitigations.

References

https://www.wordfence.com/blog/2021/02/severe-vulnerabilities-patched-in-nextgen-gallery-affect-over-800000-wordpress-sites/
https://www.wordfence.com/blog/2021/02/severe-vulnerabilities-patched-in-nextgen-gallery-affect-over-800000-wordpress-sites/

Get alerted when CVE-2020-35942 or the next vulnerability affects your stack