CVE-2026-90978: CWE-284 Improper Access Control in Filter Gallery
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.
AI Analysis
Technical Summary
CVE-2026-90978 is an improper access control vulnerability (CWE-284) in the Filter Gallery WordPress plugin before version 1.1.5. The plugin fails to verify the nonce on multiple AJAX handlers when the nonce field is omitted and does not enforce capability checks. This allows low-privileged users to overwrite the content of arbitrary posts and delete the plugin's stored gallery options.
Potential Impact
Low-privileged users can modify content they should not have access to, including overwriting arbitrary posts and deleting stored gallery options. This could lead to content tampering and loss of plugin configuration data.
Mitigation Recommendations
Upgrade the Filter Gallery plugin to version 1.1.5 or later where this issue is fixed. No other mitigations are indicated.
CVE-2026-90978: CWE-284 Improper Access Control in Filter Gallery
Description
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.
CVSS v3.1
Score 7.1high
Affected software
Filter Gallery
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-90978 is an improper access control vulnerability (CWE-284) in the Filter Gallery WordPress plugin before version 1.1.5. The plugin fails to verify the nonce on multiple AJAX handlers when the nonce field is omitted and does not enforce capability checks. This allows low-privileged users to overwrite the content of arbitrary posts and delete the plugin's stored gallery options.
Potential Impact
Low-privileged users can modify content they should not have access to, including overwriting arbitrary posts and deleting stored gallery options. This could lead to content tampering and loss of plugin configuration data.
Mitigation Recommendations
Upgrade the Filter Gallery plugin to version 1.1.5 or later where this issue is fixed. No other mitigations are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-14T13:41:36.043Z
- State
- PUBLISHED
Threat ID: 6aacd5a555bf5e2cf5955f37
Added to database: 09/18/2026, 06:09:41 UTC
Last enriched: 09/18/2026, 06:16:40 UTC
Last updated: 09/18/2026, 22:12:52 UTC
Views: 14
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