CVE-2026-91072: CWE-73 External Control of File Name or Path in EWWW Image Optimizer
The EWWW Image Optimizer WordPress plugin before 8.8.0 does not confine a WebP-derivative file migration routine to the current site's own uploads directory, letting an attacker with Administrator-level access rename or delete existing WebP-derivative image files outside that scope, including, on a multisite network, files belonging to a different site they have no access to.
AI Analysis
Technical Summary
The EWWW Image Optimizer WordPress plugin versions prior to 8.8.0 contain an external control of file name or path vulnerability (CWE-73) in a WebP-derivative file migration routine. This flaw does not restrict file operations to the current site's uploads directory, enabling an attacker with Administrator privileges to rename or delete WebP image files outside their permitted scope, including files belonging to other sites on a multisite network.
Potential Impact
An attacker with Administrator-level access can manipulate WebP-derivative image files outside their own site's uploads directory. This can lead to unauthorized modification or deletion of image files belonging to other sites in a multisite WordPress environment, potentially causing data loss or disruption of site content.
Mitigation Recommendations
Upgrade the EWWW Image Optimizer plugin to version 8.8.0 or later, where this vulnerability is fixed. No other mitigation is indicated. Patch status is confirmed by the version boundary in the affectedVersions field.
CVE-2026-91072: CWE-73 External Control of File Name or Path in EWWW Image Optimizer
Description
The EWWW Image Optimizer WordPress plugin before 8.8.0 does not confine a WebP-derivative file migration routine to the current site's own uploads directory, letting an attacker with Administrator-level access rename or delete existing WebP-derivative image files outside that scope, including, on a multisite network, files belonging to a different site they have no access to.
Affected software
EWWW Image Optimizer
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The EWWW Image Optimizer WordPress plugin versions prior to 8.8.0 contain an external control of file name or path vulnerability (CWE-73) in a WebP-derivative file migration routine. This flaw does not restrict file operations to the current site's uploads directory, enabling an attacker with Administrator privileges to rename or delete WebP image files outside their permitted scope, including files belonging to other sites on a multisite network.
Potential Impact
An attacker with Administrator-level access can manipulate WebP-derivative image files outside their own site's uploads directory. This can lead to unauthorized modification or deletion of image files belonging to other sites in a multisite WordPress environment, potentially causing data loss or disruption of site content.
Mitigation Recommendations
Upgrade the EWWW Image Optimizer plugin to version 8.8.0 or later, where this vulnerability is fixed. No other mitigation is indicated. Patch status is confirmed by the version boundary in the affectedVersions field.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-14T17:15:38.777Z
- State
- PUBLISHED
Threat ID: 6abcab01236a9c741f0494bb
Added to database: 09/30/2026, 06:24:01 UTC
Last enriched: 09/30/2026, 06:38:54 UTC
Last updated: 09/30/2026, 07:39:48 UTC
Views: 5
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