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WordPress plugin

WP Compress – Image Optimizer <= 6.11.08 — Missing Authorization to Unauthenticated CDN Modification

CVE-2024-1934Published · Updated

Action summary

Affected: ≤6.11.10Update to 6.11.11 or newer

All remediation steps
Watch plugin
Severity
High7.5
CVSS
7.5
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:H Integrity
High
A:N Availability
None
Weakness
CWE-862 Missing Authorization
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

WP Compress – Instant Performance & Speed Optimization wp-compress-image-optimizer

  1. Affected≤ 6.11.10
  2. Patched in6.11.11

Update to 6.11.11 or newer.

You are affected if you run ≤ 6.11.10. Version 6.11.11 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under WP Compress – Instant Performance & Speed Optimization.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 6.11.11, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch WP Compress – Instant Performance & Speed Optimization to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Krzysztof Zając.

The WP Compress – Image Optimizer plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'wps_local_compress::__construct' function in all versions up to, and including, 6.11.10. This makes it possible for unauthenticated attackers to reset the CDN region and set a malicious URL to deliver images.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in WP Compress – Instant Performance & Speed Optimization

All 19
More vulnerabilities in WP Compress – Instant Performance & Speed Optimization
SeverityVulnerabilityCVEPublished
Medium4.8Unauthenticated Privilege Escalation to 'group'/'setting'/'value' Parameters on comms Endpoint
≤7.25.00Update to 7.26.00
CVE-2026-104755
Medium5.3Missing Authorization to Unauthenticated Account Linking / Site Takeover via 'force_ic_connect' and 'apikey' Parameters
≤7.22.01Update to 7.22.38
CVE-2026-120551
Medium5.3Missing Authorization to Unauthenticated Settings Update
≤7.21.28Update to 7.22.0
CVE-2026-84757
Critical9.8Unauthenticated Remote Code Execution
<7.20.01Update to 7.20.01
CVE-2026-73343
Medium6.5Cross-Site Request Forgery to Arbitrary Options Deletion
≤7.10.09Update to 7.20.01
CVE-2026-17608

Same weakness (Missing Authorization)

All Missing Authorization
Other Missing Authorization vulnerabilities
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup≤5.25.25Update to 5.26.45
CVE-2026-120688
Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder≤1.0.2Update to 1.1
CVE-2026-125055
Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System≤3.3.9Update to 3.4.0
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity high, CVSS 7.5

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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