WP Compress – Instant Performance & Speed Optimization < 7.20.01 - Unauthenticated Remote Code Execution

9.8
Improper Control of Generation of Code ('Code Injection')
CVE CVE-2026-73343
CVSS 9.8 (Critical)
Publicly Published August 18, 2026
Last Updated August 24, 2026
Researcher Charles Vosburgh

Description

The WP Compress – Instant Performance & Speed Optimization plugin for WordPress is vulnerable to Remote Code Execution in all versions up to 7.20.01. This is due to insufficient validation of user supplied input before it is executed. This makes it possible for unauthenticated attackers to execute arbitrary code on the server.

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Vulnerability Details for WP Compress – Instant Performance & Speed Optimization

Software Type Plugin
Software Slug wp-compress-image-optimizer (view on wordpress.org)
Patched? Yes
Remediation Update to version 7.20.01, or a newer patched version
Affected Version
  • < 7.20.01
Patched Version
  • 7.20.01

Recent vulnerabilities in WP Compress – Instant Performance & Speed Optimization

# Title CVE ID CVSS Researchers Date
1 WP Compress <= 7.22.01 - Missing Authorization to Unauthenticated Account Linking / Site Takeover via 'force_ic_connect' and 'apikey' Parameters 5.3 Wordfence PRISM September 8, 2026
2 WP Compress – Instant Performance & Speed Optimization <= 7.21.28 - Missing Authorization to Unauthenticated Settings Update CVE-2026-84757 5.3 Thaer.Assfour September 2, 2026
3 WP Compress <= 7.10.09 - Cross-Site Request Forgery to Arbitrary Options Deletion CVE-2026-17608 6.5 Wordfence PRISM August 15, 2026
4 Compress <= 7.10.3 - Reflected Cross-Site Scripting CVE-2026-9066 6.1 Lubin Regnault July 2, 2026
5 Compress <= 6.60.28 - Missing Authorization CVE-2026-25370 5.3 Nguyen Ba Khanh February 17, 2026
6 WP Compress <= 6.50.54 - Missing Authorization CVE-2025-57899 5.3 Trương Hữu Phúc (truonghuuphuc) September 22, 2025
7 WP Compress <= 6.30.30 - Unauthenticated Broken Authentication CVE-2025-47479 7.3 Trương Hữu Phúc (truonghuuphuc) July 3, 2025
8 WP Compress <= 6.30.30 - Cross-Site Request Forgery CVE-2025-47546 4.3 Snurkeburk, SashaRyba May 7, 2025
9 WP Compress <= 6.30.15 - Authenticated (Subscriber+) Missing Authorization via Multiple Functions CVE-2025-2110 8.8 mikemyers March 25, 2025
10 WP Compress <= 6.30.15 - Unauthenticated Server-Side Request Forgery via init Function CVE-2025-2109 5.8 mikemyers March 24, 2025

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