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ShortPixel Image Optimizer <= 5.6.3 — Missing Authorization

CVE-2024-48044Published · Updated

Action summary

Affected: ≤5.6.3Update to 5.6.4 or newer

All remediation steps
Watch plugin
Severity
Medium4.3
CVSS
4.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:L Privileges required
Low
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-862 Missing Authorization
Required access
Unknown
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF shortpixel-image-optimiser

  1. Affected≤ 5.6.3
  2. Patched in5.6.4

Update to 5.6.4 or newer.

You are affected if you run ≤ 5.6.3. Version 5.6.4 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF.
  • No admin access? Run a passive check of your site. It reads public files only.

What to do

  1. Update to version 5.6.4, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Rafie Muhammad.

The ShortPixel Image Optimizer plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on several actions in class/Controller/AjaxController.php in versions up to, and including, 5.6.3. This makes it possible for authenticated attackers, with contributor-level access and above, to perform several unauthorized actions.

Exploits & references

Proof-of-concept & detection

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

Advisories & patches

More in ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF

All 11
More vulnerabilities in ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF
SeverityVulnerabilityCVEPublished
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤6.5.6Update to 6.6.0
CVE-2026-103070
High7.5Authenticated (Subscriber+) PHP Object Injection
≤6.5.5Update to 6.5.6
CVE-2026-97246
High8.8Authenticated (Author+) PHP Object Injection via Nested JSON Post Content
≤6.5.5Update to 6.5.6
CVE-2026-17086
High7.5Authenticated (Author+) PHP Object Injection
≤6.4.3Update to 6.4.4
CVE-2026-39471
Medium5.4Authenticated (Author+) Stored Cross-Site Scripting via Attachment Title
≤6.4.3Update to 6.4.4
CVE-2026-4335

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 medium, CVSS 4.3

  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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