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CVE-2026-91051

MEDIUM 6.6 CVSS 3.1
Published
September 30, 2026
Last modified
September 30, 2026
NVD status
Deferred
Reported by
contact@wpscan.com
Weakness
CWE-502
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

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 .

Affected WordPress components

  • EWWW Image Optimizer Plugin · ewww-image-optimizer
    Confirmed match Active
    From 8.6.0 (including) to 8.8.0 (excluding)
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown EWWW Image Optimizer — From 8.6.0 (including) to 8.8.0 (excluding)

References

  • wpscan.com https://wpscan.com/vulnerability/e24a9497-8fb4-4067-8421-194725455d55/
  • nvd.nist.gov Official NVD record