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CVE-2026-39554— WordPress Fidalgo theme <= 1.2.2 - PHP Object Injection vulnerability

Quick assessment

Affected
Elated-Themes Fidalgo
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 Fidalgo是Elated-Themes组织的一个主题开发框架。 Elated-Themes Fidalgo 1.2.2及之前版本存在反序列化漏洞，该漏洞源于容易受到PHP对象注入攻击。

CVSS 8.1 · High EPSS 0.44% · P36

Affected Version Matrix 1

VendorProduct Version RangeStatus
Elated-Themes Fidalgo n/a≤ 1.2.2 affected
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I. Basic Information for CVE-2026-39554

Vulnerability Information
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Vulnerability Title
WordPress Fidalgo theme <= 1.2.2 - PHP Object Injection vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated PHP Object Injection in Fidalgo <= 1.2.2 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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 Fidalgo 反序列化漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elated-Themes Fidalgo是Elated-Themes组织的一个主题开发框架。 Elated-Themes Fidalgo 1.2.2及之前版本存在反序列化漏洞，该漏洞源于容易受到PHP对象注入攻击。
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 Fidalgo n/a ~ 1.2.2 -

II. Public POCs for CVE-2026-39554

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III. Intelligence Information for CVE-2026-39554

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Vendor Advisories for CVE-2026-39554 (1)

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-2026-39557 8.1 HIGH WordPress NeoBeat theme <= 1.7 - PHP Object Injection vulnerability
CVE-2026-39578 8.1 HIGH WordPress Valiance theme <= 1.2 - 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-2026-39554

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