---
id: CVE-2026-15345
title: >-
  The ShortPixel Adaptive Images – WebP, AVIF, CDN, Image Optimization plugin
  for WordPress is vulnerable to authorization bypass in all versions up to, and
  including, 3.11.5
summary: >-
  The ShortPixel Adaptive Images – WebP, AVIF, CDN, Image Optimization plugin
  for WordPress is vulnerable to authorization bypass in all versions up to, and
  including, 3.11.5. This is due to the plugin not properly verifying that a
  user is…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-862
published: '2026-08-16'
updated: '2026-08-16'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-15345'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/shortpixel-adaptive-images/tags/3.11.5/includes/actions/notice.actions.class.php#L16
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/shortpixel-adaptive-images/tags/3.11.5/includes/actions/notice.actions.class.php#L566
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/shortpixel-adaptive-images/tags/3.11.5/includes/actions/notice.actions.class.php#L614
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/shortpixel-adaptive-images/tags/3.11.5/includes/actions/notice.actions.class.php#L87
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/shortpixel-adaptive-images/tags/3.11.5/includes/controllers/notice.class.php#L747
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3625451%40shortpixel-adaptive-images&new=3625451%40shortpixel-adaptive-images
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/c3efae8f-ca89-4d8c-a177-6793994b3ea0?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00428
epssPercentile: 0.34372
ingestedAt: '2026-08-16T18:40:27.227Z'
---

## Overview

The ShortPixel Adaptive Images – WebP, AVIF, CDN, Image Optimization plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.11.5. 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 modify configuration options of third-party plugins including ShortPixel Image Optimizer, Autoptimize, WP Rocket, Imagify, and LiteSpeed Cache, as well as the plugin's own API key and account binding. Exploitation requires the respective third-party plugins to be installed, as the impact against those plugins' settings is only reachable when those plugins are present.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.