CVE-2026-89138
Filter Gallery <= 1.1.4 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Post Modification via 'image_id' Parameter via ufg_save_gallery AJAX Action
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Filter Gallery <= 1.1.4 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Post Modification via 'image_id' Parameter via ufg_save_gallery AJAX Action
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.
- Record
CVE-2026-89138- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
EUVDEUVD-2026-82726
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.
- Record
EUVD-2026-82726- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-38vh-9c8v-rmgw
The Filter Gallery plugin for WordPress is vulnerable to authorization bypass in all versions up...
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.
- Record
GHSA-38vh-9c8v-rmgw- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-89138- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-89138 is a medium vulnerability (CVSS 4.3) in Farazfrank Filter Gallery, published September 18, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.39%, the 33rd percentile. No source names a fixed version.
References
wordfence.com/threat-intel/vulnerabilities/id/73577a0d-8aac-4369-8022-98c198f79224?source=cve
plugins.trac.wordpress.org/browser/filter-gallery/tags/1.1.4/filter-gallery.php
nvd.nist.gov/vuln/detail/CVE-2026-89138
github.com/advisories/GHSA-38vh-9c8v-rmgw