CVE-2026-90978

Filter Gallery < 1.1.5 - Subscriber+ Arbitrary Post Overwrite and Plugin Option Deletion via Fail-Open Nonce Check

The Filter Gallery WordPress plugin before 1.1.5 does not verify the nonce on several of its AJAX handlers when the nonce field is omitted, and applies no capability check, allowing low-privileged users to overwrite the content of arbitrary posts and delete the Filter Gallery WordPress plugin before 1.1.5's stored gallery options.

Affected

Filter Gallery

CVSS v3.1 CNA

7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

EPSS

0.34% chance of exploitation in the next 30 days, 26th percentile

Published

2026-09-18

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/39321ecd-98e5-4f4e-9a42-bedf5904c3d1/

References

• CVE Record
• NVD entry