Gallery Ownership Bypass in Photo Gallery, Sliders, Proofing & Themes v<4.5.0
CVE-2026-81651 Published on September 20, 2026

NextGEN Gallery < 4.5.0 - Authenticated Cross-Gallery Settings Modification via IDOR
The Photo Gallery, Sliders, Proofing and WordPress plugin before 4.5.0 does not verify that the user saving a gallery owns it, allowing any user granted its gallery-management capability by an administrator to overwrite the stored settings of any gallery on the site, including its filesystem path, and including galleries belonging to other users.