CVE-2026-39554: CWE-502 Deserialization of Untrusted Data in Elated-Themes Fidalgo
CVE-2026-39554 is a high-severity vulnerability in Elated-Themes Fidalgo versions up to 1.2.2 that allows unauthenticated PHP Object Injection due to deserialization of untrusted data. This vulnerability can lead to complete compromise of confidentiality, integrity, and availability. No official patch or remediation guidance is currently provided by the vendor.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-39554) affects Elated-Themes Fidalgo versions <= 1.2.2 and involves unauthenticated PHP Object Injection caused by deserialization of untrusted data (CWE-502). The CVSS 3.1 base score is 8.1, indicating high severity with network attack vector, high attack complexity, no privileges required, no user interaction, and impacts confidentiality, integrity, and availability. No patch or official remediation level has been disclosed as of the publication date.
Potential Impact
Successful exploitation of this vulnerability can allow an unauthenticated attacker to perform PHP Object Injection, potentially leading to remote code execution or other severe impacts compromising confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider restricting access to vulnerable endpoints and monitoring for suspicious activity related to deserialization attempts.
CVE-2026-39554: CWE-502 Deserialization of Untrusted Data in Elated-Themes Fidalgo
Description
CVE-2026-39554 is a high-severity vulnerability in Elated-Themes Fidalgo versions up to 1.2.2 that allows unauthenticated PHP Object Injection due to deserialization of untrusted data. This vulnerability can lead to complete compromise of confidentiality, integrity, and availability. No official patch or remediation guidance is currently provided by the vendor.
CVSS v3.1
Score 8.1high
Affected software
pkg:composer/elated-themes/fidalgoRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-39554) affects Elated-Themes Fidalgo versions <= 1.2.2 and involves unauthenticated PHP Object Injection caused by deserialization of untrusted data (CWE-502). The CVSS 3.1 base score is 8.1, indicating high severity with network attack vector, high attack complexity, no privileges required, no user interaction, and impacts confidentiality, integrity, and availability. No patch or official remediation level has been disclosed as of the publication date.
Potential Impact
Successful exploitation of this vulnerability can allow an unauthenticated attacker to perform PHP Object Injection, potentially leading to remote code execution or other severe impacts compromising confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider restricting access to vulnerable endpoints and monitoring for suspicious activity related to deserialization attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Patchstack
- Date Reserved
- 2026-04-07T10:48:26.892Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a31c7a30b89be6888375cfa
Added to database: 6/16/2026, 10:01:07 PM
Last enriched: 6/16/2026, 10:30:09 PM
Last updated: 6/17/2026, 5:00:04 AM
Views: 4
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