CVE-2026-81285: WordPress Smush Image Compression and Optimization plugin <= 4.2.0 - Denial of Service Attack vulnerability

Published Aug 28, 2026
·
Updated

Unauthenticated Denial of Service Attack in Smush Image Compression and Optimization <= 4.2.0 versions.

Affected Software

1 affected component
wordpress/smush-image-compression-and-optimization<=4.2.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade wordpress/smush-image-compression-and-optimization to a version that resolves this vulnerability.

    Fixed in 4.3.0

Event History

Aug 28, 2026
CVE Published
via MITRE·02:33 PM
Data Sourced
via MITRE·02:33 PM
RemedyDescriptionSeverityWeakness

Frequently Asked Questions

1

Which installations are affected?

WordPress sites using Smush Image Compression and Optimization version 4.2.0 or earlier are affected.

2

Does exploitation require an authenticated WordPress user or user interaction?

No. The vulnerability is remotely exploitable without privileges or user interaction.

3

What is the expected security impact?

The impact is denial of service: availability may be affected. The provided CVSS vector indicates no confidentiality or integrity impact.

Contact

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