CVE-2026-91072 Details
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.
A vulnerability exists in the EWWW Image Optimizer WordPress plugin in versions prior to 8.8.0. The issue arises because the WebP-derivative file migration routine does not restrict itself to the current site's uploads directory. This flaw allows an attacker with Administrator-level access to rename or delete WebP-derivative image files outside of their site's directory. In a multisite network, this could affect files belonging to a different site that the attacker does not have access to.
Users are advised to update the EWWW Image Optimizer WordPress plugin to version 8.8.0 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 30, 2026CISA-ADP
Assessed Sep 30, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://wpscan.com/vulnerability/c77770c5-d1af-47f6-9aee-a50d4a919732/ | [email protected] | AdvisoryExploitRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-73 | External Control of File Name or Path | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| EWWW Image Optimizer | < 8.8.0 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 30, 2026 | CVE Modified | CISA-ADP |
| Sep 30, 2026 | New CVE Received | [email protected] |