EUVD-2026-96450
GHSA-3777-f2vm-752j
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessReach public WooCommerce endpoint
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DeliverySubmit crafted serialized PHP object
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ExploitTrigger unsafe unserialize() in plugin
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ExecutionInvoke POP gadget chain
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ImpactExecute code / compromise site
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A08:2025 - Software or Data Integrity Failures
ASVS 5.0
V1 - Encoding and Sanitization Safe deserialization, type allowlists
MITRE ATT&CK
2 techniques across 2 tactics: Execution, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Requires the target to be running Booster for WooCommerce (plugin slug woocommerce-jetpack, vendor pluggabl) at version 8.4.0 or earlier on a WordPress/WooCommerce site that is network-reachable. The CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates no authentication, no user interaction, and no non-default configuration are needed, so default installs of the affected versions are exposed. Practical impact is limited by whether a usable PHP POP gadget chain is reachable in the plugin or other loaded code at the point of unserialization; without such a chain, object injection may not escalate to full code execution. Primary limiting factor is simply having the affected plugin version installed and the site internet-facing. |
| Impact | The input CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H = 9.8 Critical) describes a remotely reachable, low-complexity, unauthenticated flaw with full confidentiality, integrity and availability impact - consistent with a CWE-502 PHP Object Injection that typically yields remote code execution when a usable POP gadget chain is present. However, several corroborating signals are absent: no EPSS exploitation-probability score was provided, the vulnerability is NOT listed in CISA KEV, and no public POC/exploit code is referenced. The single source is a Patchstack advisory, so exploitation status is 'no public exploit identified at time of analysis' - the high CVSS reflects worst-case potential (deserialization of attacker-controlled data) rather than confirmed in-the-wild activity. A key caveat for PHP Object Injection specifically: real-world impact depends on whether an exploitable gadget chain exists in the plugin or co-loaded code; without that, the practical outcome may be limited to object instantiation rather than full RCE, which the raw 9.8 does not capture. Net: treat as a genuine high priority for WooCommerce operators running the affected plugin (unauthenticated + network reachable), but note that EPSS/KEV/POC corroboration is missing, so widespread automated exploitation is not yet evidenced. |
| Exploit ScenarioDerived | A remote, unauthenticated attacker sends a crafted request to a public-facing WooCommerce store running Booster for WooCommerce <= 8.4.0, embedding a serialized PHP object in a parameter the plugin deserializes. If a suitable gadget chain is reachable, the injected object triggers unintended code paths during unserialization, potentially leading to remote code execution, data disclosure, or site compromise. No authentication or user interaction is required (PR:N/UI:N), though no public exploit code is referenced at time of analysis. |
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Alert meAnalysisAIv1 – Oct 10, 2026
Unauthenticated PHP object injection in Booster for WooCommerce (WordPress plugin slug woocommerce-jetpack, vendor pluggabl) at version 8.4.0 and earlier allows remote attackers to feed attacker-controlled serialized data into the plugin's deserialization path on any internet-facing WordPress/WooCommerce site, with the assessed CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (9.8 Critical) indicating no credentials, no user interaction, and no non-default configuration are required. Escalation to full remote code execution depends on whether a usable PHP POP gadget chain is reachable in the plugin or other loaded code at the point of unserialization, so the practical worst case is complete site compromise while the minimum case is a deserialization primitive with uncertain downstream effect. There is no public exploit identified at time of analysis and the issue is not listed in CISA KEV; Patchstack is credited as the reporter.
RemediationAI
No vendor-released patch version for this issue is identified in the provided data, so the actionable steps begin with confirming the installed Booster for WooCommerce version and either removing or deactivating the plugin (slug woocommerce-jetpack) on any site that does not strictly need it - the trade-off is loss of the storefront features it provides - or, if continued use is required, monitoring https://patchstack.com/database/wordpress/plugin/woocommerce-jetpack/vulnerability/wordpress-booster-for-woocommerce-plugin-8-4-0-php-object-injection-vulnerability?_s_id=cve and the vendor's WordPress.org plugin page for the fixed release and upgrading immediately when it is published. Compensating controls while unpatched: front the site with a WAF configured to detect and block serialized-object payloads (O: patterns and base64/URL-encoded equivalents) in query strings, POST bodies, cookies, and headers, understanding that encoding tricks can evade signatures and that false positives may break legitimate plugin traffic; restrict administrative and WooCommerce AJAX/REST endpoints to trusted source addresses where operationally feasible, accepting that this can break storefront functionality for legitimate customers; and keep WordPress core, WooCommerce, and all themes/plugins current to reduce the chance of a POP gadget chain being reachable. Because the flaw requires no authentication or user interaction, log review and integrity monitoring on affected installs is advisable, though success of such monitoring depends on the plugin's post-exploitation behavior, which is not described in the available data.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
The root cause is CWE-502 (Deserialization of Untrusted Data): the plugin passes attacker-supplied input into a PHP unserialize()/object-instantiation sink without adequate validation or type restriction, allowing an attacker to construct arbitrary PHP objects. In the PHP object injection pattern, the attacker does not execute code directly; instead they supply a serialized object graph whose magic methods (__wakeup, __destruct, __toString, __call, and similar) are invoked automatically during unserialization, and those methods must chain through classes already loaded by the plugin, WordPress core, WooCommerce, or other active themes and plugins. The CPE cpe:2.3:a:pluggabl:booster_for_woocommerce:*:*:*:*:*:*:*:* with a wildcard version confirms that the affected vendor product is the pluggabl-published Booster for WooCommerce plugin and that the record covers the version range up to and including 8.4.0 rather than a single build. The vulnerability sits in the plugin's handling of request data on a standard PHP/WordPress stack, which is why the vector carries AC:L and PR:N: no special conditions or account are needed to reach the sink on a default installation. Impact therefore hinges on gadget availability rather than on the injection itself, and the provider's CVSS scores the confidentiality, integrity, and availability consequences as high on the assumption that such a chain exists.
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Unauthenticated remote object injection (PR:N/AV:N/AC:L) in a web plugin with deserialization-to-RCE potential justifies C:H/I:H/A:H; scope unchanged as impact stays within the PHP application.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
DescriptionCVE.org
Unauthenticated PHP Object Injection in Booster for WooCommerce <= 8.4.0 versions.
Articles & Coverage 1
Executive ViewAI
Organizations running Booster for WooCommerce (woocommerce-jetpack) versions 8.4.0 and earlier on internet-facing WordPress/WooCommerce sites face a critical unauthenticated vulnerability that could result in complete site compromise in the worst case. Because these sites often handle customer data, payments, and order workflows, a compromise could disrupt revenue, expose sensitive information, and damage customer trust. Leadership should treat remediation as urgent while noting that no public exploit has been identified at time of analysis.
No vendor-released patch identified at time of analysis. Interim mitigations: deactivate or remove Booster for WooCommerce (woocommerce-jetpack) version 8.4.0 and earlier; if removal is not feasible, restrict the plugin's exposure, deploy WAF/virtual patching rules to block serialized PHP object injection attempts, monitor WordPress and server logs for exploitation indicators, and isolate or back up affected sites.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Insecure deserialization occurs when an application converts serialized data (a stream of bytes representing an object's state) back into a living object without proper validation.
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