CVE-2025-47479: WordPress WP Compress plugin <= 6.30.30 - Broken Authentication Vulnerability

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-04 · updated 2026-06-17
Weakness: CWE-1390

Description

Weak Authentication vulnerability in AresIT WP Compress wp-compress-image-optimizer allows Authentication Abuse.This issue affects WP Compress: from n/a through <= 6.30.30.

Affected products

aresit WP Compress – Instant Performance & Speed Optimization: before 6.30.31 — fixed in 6.30.31

How to fix

Upgrade to a fixed version: aresit WP Compress – Instant Performance & Speed Optimization 6.30.31. Check the vendor advisory for mitigations.

References

https://patchstack.com/database/Wordpress/Plugin/wp-compress-image-optimizer/vulnerability/wordpress-wp-compress-6-30-30-broken-authentication-vulnerability?_s_id=cve

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