What is GHSA-6w6r-chf5-m436?

GHSA-6w6r-chf5-m436 is a security advisory published by GitHub Security Advisories with Medium severity. The EWWW Image Optimizer WordPress plugin before 8.8.0 does not confine a WebP-derivative file...

Which CVE IDs does GHSA-6w6r-chf5-m436 cover?

GHSA-6w6r-chf5-m436 covers the following CVE IDs: CVE-2026-91072. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-6w6r-chf5-m436?

GHSA-6w6r-chf5-m436 has a CVSS v3 base score of 4.4, published by GitHub Security Advisories.

GHSA-6w6r-chf5-m436MediumCVSS 4.4

The EWWW Image Optimizer WordPress plugin before 8.8.0 does not confine a WebP-derivative file...

Vendor

GitHub Security Advisories

Published

September 30, 2026

Last Modified

September 30, 2026

🔗 CVE IDs covered (1)

CVE-2026-91072 →

📋 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.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-91072
https://wpscan.com/vulnerability/c77770c5-d1af-47f6-9aee-a50d4a919732
https://github.com/advisories/GHSA-6w6r-chf5-m436