WordPress ShortPixel Image Optimizer plugin <= 6.4.3 - PHP Object Injection vulnerability
Summary
| CVE | CVE-2026-39471 |
|---|---|
| State | PUBLISHED |
| Assigner | Patchstack |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-06-15 21:16:43 UTC |
| Updated | 2026-06-15 21:16:43 UTC |
| Description | Author PHP Object Injection in ShortPixel Image Optimizer <= 6.4.3 versions. |
Risk And Classification
Primary CVSS: v3.1 7.2 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.004460000 probability, percentile 0.354140000 (date 2026-06-22)
Problem Types: CWE-502 | CWE-502 CWE-502 Deserialization of Untrusted Data
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 7.2 | HIGH | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | CVSS | 7.2 | HIGH | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
HighUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | ShortPixel | ShortPixel Image Optimizer | affected n/a 6.4.3 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| patchstack.com/database/wordpress/plugin/shortpixel-image-optimiser/vulnerab... | [email protected] | patchstack.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: daroo | Patchstack Bug Bounty Program (en)
Additional Advisory Data
Solutions
CNA: Update the WordPress ShortPixel Image Optimizer Plugin to the latest available version (at least 6.4.4).
There are currently no legacy QID mappings associated with this CVE.