CVE-2026-89138: CWE-862 Missing Authorization in farazfrank Filter Gallery
The Filter Gallery plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.1.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the title and content of arbitrary WordPress posts, write the _wp_attachment_image_alt meta key on arbitrary posts, and create or overwrite arbitrary ufg_gallery_* options.
AI Analysis
Technical Summary
CVE-2026-89138 describes a missing authorization vulnerability (CWE-862) in the Filter Gallery plugin for WordPress, affecting all versions up to and including 1.1.4. The plugin fails to verify that a user is authorized to perform certain actions, allowing authenticated users with subscriber-level privileges or higher to overwrite arbitrary WordPress post titles and content, write the _wp_attachment_image_alt meta key on arbitrary posts, and create or overwrite arbitrary ufg_gallery_* options. The CVSS 3.1 base score is 4.3 (medium severity), reflecting low impact on confidentiality and availability but limited integrity impact.
Potential Impact
An attacker with subscriber-level access or higher can modify post content and metadata, potentially defacing content or altering site behavior through plugin options. There is no direct impact on confidentiality or availability. The integrity of posts and plugin settings can be compromised.
Mitigation Recommendations
No official patch or fix is currently documented. Users should monitor the vendor's advisory for updates. Until a fix is available, restrict user roles carefully and avoid granting subscriber or higher privileges to untrusted users. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
CVE-2026-89138: CWE-862 Missing Authorization in farazfrank Filter Gallery
Description
The Filter Gallery plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.1.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the title and content of arbitrary WordPress posts, write the _wp_attachment_image_alt meta key on arbitrary posts, and create or overwrite arbitrary ufg_gallery_* options.
CVSS v3.1
Score 4.3medium
Affected software
farazfrank
Filter Gallery
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-89138 describes a missing authorization vulnerability (CWE-862) in the Filter Gallery plugin for WordPress, affecting all versions up to and including 1.1.4. The plugin fails to verify that a user is authorized to perform certain actions, allowing authenticated users with subscriber-level privileges or higher to overwrite arbitrary WordPress post titles and content, write the _wp_attachment_image_alt meta key on arbitrary posts, and create or overwrite arbitrary ufg_gallery_* options. The CVSS 3.1 base score is 4.3 (medium severity), reflecting low impact on confidentiality and availability but limited integrity impact.
Potential Impact
An attacker with subscriber-level access or higher can modify post content and metadata, potentially defacing content or altering site behavior through plugin options. There is no direct impact on confidentiality or availability. The integrity of posts and plugin settings can be compromised.
Mitigation Recommendations
No official patch or fix is currently documented. Users should monitor the vendor's advisory for updates. Until a fix is available, restrict user roles carefully and avoid granting subscriber or higher privileges to untrusted users. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-09-10T22:55:45.434Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aace1f355bf5e2cf5a3c684
Added to database: 09/18/2026, 07:02:11 UTC
Last enriched: 09/18/2026, 07:17:07 UTC
Last updated: 09/18/2026, 22:12:52 UTC
Views: 9
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