WooCommerce Subscriptions < 9.1.0 - Unauthenticated RCE via PHP Object Injection

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-18391
StatePUBLISHED
AssignerWPScan
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-12 06:20:14 UTC
Updated2026-08-12 06:20:14 UTC
DescriptionThe WooCommerce Subscriptions WordPress plugin before 9.1.0 does not validate user input before unserializing it on stores with High-Performance Order Storage enabled, leading to a PHP Object Injection issue which unauthenticated users can escalate to Remote Code Execution via a gadget chain present in the bundled dependencies.

Risk And Classification

Problem Types: CWE-94 Improper Control of Generation of Code ('Code Injection')

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Unknown WooCommerce Subscriptions affected 4.7.0 9.1.0 semver Not specified

References

ReferenceSourceLinkTags
wpscan.com/vulnerability/191f76cf-e5bd-4a37-ac1c-9187cea2aa27 [email protected] wpscan.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: Vasily Belolapotkov (en)

CNA: Vlad Olaru (en)

CNA: WPScan (en)

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