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CVE-2026-39578— WordPress Valiance theme <= 1.2 - PHP Object Injection vulnerability

Quick assessment

Affected
Elated-Themes Valiance
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Elated-Themes Valiance是Elated-Themes组织的一款Web组件产品。 Elated-Themes Valiance 1.2及之前版本存在反序列化漏洞，该漏洞源于未认证的PHP对象注入。

CVSS 8.1 · Medium EPSS 0.29% · P20

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
Elated-Themes Valiance n/a≤ 1.2 affected
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I. Basic Information for CVE-2026-39578

Vulnerability Information
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Vulnerability Title
WordPress Valiance theme <= 1.2 - PHP Object Injection vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated PHP Object Injection in Valiance <= 1.2 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
Elated-Themes Valiance 反序列化漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elated-Themes Valiance是Elated-Themes组织的一款Web组件产品。 Elated-Themes Valiance 1.2及之前版本存在反序列化漏洞，该漏洞源于未认证的PHP对象注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Elated-Themes Valiance n/a ~ 1.2 -

II. Public POCs for CVE-2026-39578

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III. Intelligence Information for CVE-2026-39578

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Same Patch Batch · Elated-Themes · 2026-06-16 · 9 CVEs total

CVE-2026-39522 8.1 HIGH WordPress Solene theme <= 3.4 - Local File Inclusion vulnerability
CVE-2026-39577 8.1 HIGH WordPress Playroom theme <= 1.4.1 - PHP Object Injection vulnerability
CVE-2026-39549 8.1 HIGH WordPress Aperitif theme <= 1.5 - Local File Inclusion vulnerability
CVE-2026-39554 8.1 HIGH WordPress Fidalgo theme <= 1.2.2 - PHP Object Injection vulnerability
CVE-2026-39557 8.1 HIGH WordPress NeoBeat theme <= 1.7 - PHP Object Injection vulnerability
CVE-2026-39568 8.1 HIGH WordPress Mr. SEO theme <= 2.0 - Local File Inclusion vulnerability
CVE-2026-40758 8.1 HIGH WordPress Léonie theme <= 1.2.1 - PHP Object Injection vulnerability
CVE-2026-40754 8.1 HIGH WordPress Roisin theme <= 1.4 - PHP Object Injection vulnerability

IV. Related Vulnerabilities

Same vendor: Elated-Themes
Same weakness: CWE-502

V. Comments for CVE-2026-39578

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