CVE-2020-35943

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-02-09 · updated 2026-06-17
Weakness: CWE-352

Description

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.)

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/

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