CVE-2026-39573: CWE-502 Deserialization of Untrusted Data in Select-Themes Mildhill
Unauthenticated PHP Object Injection in Mildhill <= 1.5 versions.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-39573) affects Select-Themes Mildhill versions up to 1.5 and is classified as CWE-502: Deserialization of Untrusted Data. It enables unauthenticated PHP object injection, which can lead to remote code execution. The CVSS 3.1 base score is 8.1, reflecting high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation can result in full compromise of the affected system, including complete loss of confidentiality, integrity, and availability. Since the vulnerability is exploitable without authentication, it poses a significant risk to affected installations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to vulnerable endpoints and consider applying temporary mitigations if available from the vendor.
CVE-2026-39573: CWE-502 Deserialization of Untrusted Data in Select-Themes Mildhill
Description
Unauthenticated PHP Object Injection in Mildhill <= 1.5 versions.
CVSS v3.1
Score 8.1high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-39573) affects Select-Themes Mildhill versions up to 1.5 and is classified as CWE-502: Deserialization of Untrusted Data. It enables unauthenticated PHP object injection, which can lead to remote code execution. The CVSS 3.1 base score is 8.1, reflecting high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation can result in full compromise of the affected system, including complete loss of confidentiality, integrity, and availability. Since the vulnerability is exploitable without authentication, it poses a significant risk to affected installations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to vulnerable endpoints and consider applying temporary mitigations if available from the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Patchstack
- Date Reserved
- 2026-04-07T10:48:38.854Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3280460b89be68882ff96e
Added to database: 6/17/2026, 11:08:54 AM
Last enriched: 6/17/2026, 11:45:41 AM
Last updated: 6/17/2026, 5:22:40 PM
Views: 2
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