CVE-2026-91011

MEDIUMCVSS 6.8

Description

The EWWW Image Optimizer WordPress plugin before 8.7.7 does not properly escape image attribute values when it rewrites page output, allowing authenticated users with author-level access and above to inject arbitrary JavaScript that is stored in published content and executes in the browser of any user who later views the affected page.

Timeline

Published:September 17th, 2026 6:16 AM

Last modified:September 18th, 2026 7:08 PM

CVSS Scoring

CVSS v3: 6.8 (MEDIUM)

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-79

References & Reports

Advisories, patches, and third-party reports

https://wpscan.com/vulnerability/334f14d5-f97b-4ec5-9b42-bb0803ae1668/

Source: NIST NVD · Data may lag official sources by up to one minute