CVE-2026-39545: CWE-502 Deserialization of Untrusted Data in Select-Themes Zermatt
CVE-2026-39545 is a high-severity vulnerability in Select-Themes Zermatt versions up to and including 1.6.1. It involves unauthenticated PHP Object Injection due to deserialization of untrusted data (CWE-502). This vulnerability allows remote attackers to potentially execute arbitrary code or cause denial of service without requiring authentication.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-39545) affects Select-Themes Zermatt versions <= 1.6.1 and is classified under CWE-502 (Deserialization of Untrusted Data). It allows unauthenticated attackers to perform PHP Object Injection, which can lead to remote code execution, data manipulation, or denial of service. The CVSS 3.1 base score is 8.1, reflecting high impact on confidentiality, integrity, and availability. No official patch or remediation level has been published as of the data provided.
Potential Impact
Successful exploitation can lead to full compromise of the affected system, including remote code execution, data integrity loss, and service disruption. The vulnerability does not require authentication, increasing its risk. The attack complexity is high, but the impact on confidentiality, integrity, and availability is high.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the vulnerable application, apply web application firewalls with rules targeting PHP Object Injection patterns, and monitor for suspicious activity related to deserialization attempts. Avoid using untrusted data in deserialization processes.
CVE-2026-39545: CWE-502 Deserialization of Untrusted Data in Select-Themes Zermatt
Description
CVE-2026-39545 is a high-severity vulnerability in Select-Themes Zermatt versions up to and including 1.6.1. It involves unauthenticated PHP Object Injection due to deserialization of untrusted data (CWE-502). This vulnerability allows remote attackers to potentially execute arbitrary code or cause denial of service without requiring authentication.
CVSS v3.1
Score 8.1high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-39545) affects Select-Themes Zermatt versions <= 1.6.1 and is classified under CWE-502 (Deserialization of Untrusted Data). It allows unauthenticated attackers to perform PHP Object Injection, which can lead to remote code execution, data manipulation, or denial of service. The CVSS 3.1 base score is 8.1, reflecting high impact on confidentiality, integrity, and availability. No official patch or remediation level has been published as of the data provided.
Potential Impact
Successful exploitation can lead to full compromise of the affected system, including remote code execution, data integrity loss, and service disruption. The vulnerability does not require authentication, increasing its risk. The attack complexity is high, but the impact on confidentiality, integrity, and availability is high.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the vulnerable application, apply web application firewalls with rules targeting PHP Object Injection patterns, and monitor for suspicious activity related to deserialization attempts. Avoid using untrusted data in deserialization processes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Patchstack
- Date Reserved
- 2026-04-07T10:48:21.621Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3280400b89be68882ff758
Added to database: 06/17/2026, 11:08:48 UTC
Last enriched: 06/24/2026, 16:21:47 UTC
Last updated: 08/01/2026, 19:17:59 UTC
Views: 38
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