CVE-2026-89138Network attack vectorHinoki check available

Subscriber-level post modification via unchecked AJAX authorization

Published Sep 18, 2026 · Updated Sep 18, 2026

Authorization bypass in FARAZFRANK Filter Gallery 1.1.4 and earlier allows remote authenticated users to modify arbitrary WordPress posts. The ufg_save_gallery AJAX handler trusts the image_id parameter when selecting a post and writes its title, content, image-alt metadata, and ufg_gallery_* options without checking the caller's capability. Subscriber-level access is sufficient, and successful exploitation changes site content and plugin configuration without granting code execution or data disclosure.

CVSS severity4.3
Medium
EPSS probability0.39%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authorization bypass in FARAZFRANK Filter Gallery 1.1.4 and earlier allows remote authenticated users to modify arbitrary WordPress posts. The ufg_save_gallery AJAX handler trusts the image_id parameter when selecting a post and writes its title, content, image-alt metadata, and ufg_gallery_* options without checking the caller's capability. Subscriber-level access is sufficient, and successful exploitation changes site content and plugin configuration without granting code execution or data disclosure.

The record

CVE
CVE-2026-89138
Published
Sep 18, 2026
Updated
Sep 18, 2026
Vendor
FARAZFRANK
Product
Filter Gallery
Classifications
CWE-862, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FARAZFRANK · Filter Galleryversion=0 <=1.1.4

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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