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 .

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 30 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 30 Sep 2026 13:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-502

Wed, 30 Sep 2026 06:15:00 +0000

Type Values Removed Values Added
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 .
Title EWWW Image Optimizer 8.6.0 - 8.7.7 - Author+ PHP Object Injection via 'eio_page_settings' Post Meta
References

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-09-30T13:37:22.160Z

Reserved: 2026-09-14T17:15:20.460Z

Link: CVE-2026-91051

cve-icon Vulnrichment

Updated: 2026-09-30T13:22:25.679Z

cve-icon NVD

Status : Deferred

Published: 2026-09-30T06:17:09.173

Modified: 2026-09-30T16:28:31.510

Link: CVE-2026-91051

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-30T12:45:07Z

Weaknesses