CVE-2026-91051

MEDIUMCVSS 6.6

Description

The EWWW Image Optimizer WordPress plugin before 8.8.0 does not prevent authenticated users with author-level permissions from storing a serialized value in a post meta field that is deserialized when the post is rendered, allowing them to perform PHP Object Injection, which can lead to remote code execution when a suitable gadget chain is present via another installed EWWW Image Optimizer WordPress plugin before 8.8.0 or .

Timeline

Published:September 30th, 2026 6:17 AM

Last modified:September 30th, 2026 4:28 PM

CVSS Scoring

CVSS v3: 6.6 (MEDIUM)

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

Weaknesses (CWE)

CWE-502

References & Reports

Advisories, patches, and third-party reports

https://wpscan.com/vulnerability/e24a9497-8fb4-4067-8421-194725455d55/

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