CVE-2026-81654Network attack vectorHinoki check available

Site-wide image setting changes via missing capability check

Published Sep 20, 2026 · Updated Sep 20, 2026

Authorization bypass in NextGEN Gallery before 4.5.0 allows remote authenticated users to alter site-wide image sizing settings. The settings save path accepts a caller holding only the plugin's gallery-management capability and omits the separate options-capability check before persisting global values. An administrator must first grant gallery-management access; exploitation changes global image behavior without granting full administrative control.

CVSS severity3.1
Low
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authorization bypass in NextGEN Gallery before 4.5.0 allows remote authenticated users to alter site-wide image sizing settings. The settings save path accepts a caller holding only the plugin's gallery-management capability and omits the separate options-capability check before persisting global values. An administrator must first grant gallery-management access; exploitation changes global image behavior without granting full administrative control.

The record

CVE
CVE-2026-81654
Published
Sep 20, 2026
Updated
Sep 20, 2026
Vendor
Sandhills Development, LLC
Product
NextGEN Gallery
Classifications
CWE-639, T1548
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 20, 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 <4.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Sandhills Development, LLC · NextGEN Galleryversion=0 <4.5.0

Published CVSS scores

3.1CISA-ADPCVSS:3.1/AV:N/AC:H/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-639Authorization Bypass Through User-Controlled Key
T1548Abuse Elevation Control Mechanism

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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