CVE-2026-15345

ShortPixel Adaptive Images <= 3.11.5 - Missing Authorization to Authenticated (Subscriber+) Third-Party Plugin Option Modification via 'causer' Parameter

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.

We have discovered 2,395 live websites that are affected by CVE-2026-15345.

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Affected Software

Product  Shortpixel Adaptive Images
Category Wordpress Plugins
Vulnerable Domains2,395 live websites (93% of Shortpixel Adaptive Images install base)
Vulnerable Versions
  • from 0 through 3.11.5
Vulnerable Versions Count77 versions ( 99% of all versions)


Common Weakness Enumeration

CWE-862 Missing Authorization



Details

  • Published - Aug 16, 2026
  • Updated - Aug 17, 2026

Credits

  • Wordfence PRISM (finder)

Website Distribution by Country

Number of websites using CVE-2026-15345
United States1,106 websites


Germany184 websites
GB154 websites
Netherlands93 websites
France77 websites
Canada73 websites
Italy60 websites
Australia55 websites
Poland53 websites
Belgium41 websites

Website Distribution by TLD

Number of websites using CVE-2026-15345
.com1,246 websites
.org114 websites
.co.uk111 websites
.de90 websites
.nl86 websites
.it50 websites
.com.au47 websites
.ca42 websites
.net38 websites
.pl38 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-15345

Top websites that are affected by CVE-2026-15345. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
**********.ca Canada**,***
************.com United States**,***
********.com United States**,***
*************.org United States**,***
******.com United States***,***
****.org United States***,***
*************.com United States***,***
********.com Sweden***,***
*********.com United States***,***
**.********.com United States***,***
See full domain list

FAQ

CVE-2026-15345 is Missing Authorization in Shortpixel Adaptive Images
A total of 2,395 websites have been identified as vulnerable to CVE-2026-15345, based on global website indexing conducted by WebTechSurvey.
The Shortpixel Adaptive Images is affected by the CVE-2026-15345 vulnerability.
Shortpixel Adaptive Images versions up to and including 3.11.5 are vulnerable to CVE-2026-15345.

References