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VULNERABILITIES

CVE-2026-91051 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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 .

Metrics

CVSS 3.x Severity and Vector Strings:

NDDVolerionCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA: CISA-ADPCVSS-B:6.6 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://wpscan.com/vulnerability/e24a9497-8fb4-4067-8421-194725455d55/ [email protected]AdvisoryExploitRemedy

Weakness Enumeration

CWE-IDCWE NameSource
CWE-502Deserialization of Untrusted DataCISA-ADP

Affected Products

ProductVersions
EWWW Image Optimizer
>= 8.6.0, <= 8.7.7 (semver)

CPE

  • cpe:2.3:a:ewww:image_optimizer:*:*:*:*:*:wordpress:*:*

Remediation

  • Upgrade: 8.8.0moderate effort

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-91051
NVD Published Date:
Sep 30, 2026
NVD Last Modified:
Sep 30, 2026
Source:
[email protected]
CVE-2026-91051 Details - Not Deferred