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Avada Theme EUVD-2026-37462

| CVE-2026-12256 HIGH
Deserialization of Untrusted Data (CWE-502)
2026-06-16 Patchstack
PHP Deserialization Avada
8.8
CVSS 3.1 · Vendor: Patchstack
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Severity by source

Vendor (Patchstack) PRIMARY
8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
8.8 HIGH

Network-reachable WordPress endpoint (AV:N), no special conditions beyond a Contributor account (AC:L, PR:L), no victim interaction (UI:N), and PHP object injection typically yields full RCE impacting C/I/A.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

1
Analysis Generated
Jun 16, 2026 - 23:45 vuln.today

DescriptionCVE.org

Contributor PHP Object Injection in Avada <= 3.15.3 versions.

AnalysisAI

PHP Object Injection in the ThemeFusion Avada WordPress theme versions 3.15.3 and earlier allows authenticated users with Contributor-level privileges to trigger unsafe deserialization, potentially leading to remote code execution, data tampering, or service disruption on the underlying WordPress installation. No public exploit identified at time of analysis, but the low attack complexity and widespread deployment of Avada as a commercial WordPress theme make this a meaningful risk for multi-author sites.

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain Contributor credentials on target site
Delivery
Identify vulnerable Avada input vector
Exploit
Submit crafted serialized PHP object payload
Execution
Trigger unsafe unserialize() in Avada code path
Persist
POP gadget chain executes arbitrary PHP
Impact
Install webshell or exfiltrate wp-config secrets
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Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated WordPress account with at least the Contributor role on a site running the Avada theme at version 3.15.3 or below (PR:L in the CVSS vector aligns with the description's explicit 'Contributor' wording); no user interaction by another party and no special non-default theme configuration is indicated. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H scores 8.8 (High) on the basis of network reach, low complexity, and full CIA impact, tempered only by the requirement for low-privilege (Contributor) authentication. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker registers or compromises a Contributor account on a WordPress site running Avada ≤ 3.15.3 and submits a draft post or AJAX request containing a crafted serialized PHP payload to the vulnerable Avada parameter. Upon deserialization, a POP gadget chain composed of classes from WordPress core, Avada, or other active plugins is triggered, allowing the attacker to write a webshell, exfiltrate wp-config.php database credentials, or escalate to administrator.
Remediation Upgrade the Avada theme to a version newer than 3.15.3 once ThemeFusion publishes a fixed release; consult the Patchstack advisory at https://patchstack.com/database/wordpress/theme/avada/vulnerability/wordpress-avada-theme-3-15-3-php-object-injection-vulnerability and the official ThemeFusion update channel for the exact patched version, as no specific fix version is enumerated in the available data. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

24 hours: Audit all Contributor-level WordPress accounts on Avada sites; immediately revoke access for inactive or non-essential contributors. …

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EUVD-2026-37462 vulnerability details – vuln.today
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