PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-112851 ThemeREX Group CVE debrief

A critical vulnerability was found in the WordPress HotLock theme, versions up to and including 1.3.9. This issue allows for PHP Object Injection due to the deserialization of untrusted data. The vulnerability has a CVSS score of 9.8, indicating a high severity level. Defenders should assess exposure and prioritize remediation efforts. The vulnerability is caused by the deserialization of untrusted data in the HotLock theme, which could lead to potential code execution, data breaches, or disruption of services. It is essential to verify version information and apply patches or updates to prevent exploitation. The CVE record and source item provide details on the vulnerability, but

Vendor
ThemeREX Group
Product
HotLock
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-23
Original CVE updated
2026-10-24
Advisory published
2026-10-23
Advisory updated
2026-10-24

Who should care

Defenders responsible for WordPress installations using the HotLock theme should assess exposure and prioritize remediation efforts. This includes administrators, security teams, and developers who manage WordPress installations.

Why it matters

CVE-2026-112851 is a critical vulnerability in the WordPress HotLock theme that allows for PHP Object Injection. Defenders should assess exposure, prioritize remediation efforts, and verify version information to prevent potential code execution, data breaches, or disruption of services.

  • Potential for code execution on affected installations.
  • Possible data breaches or unauthorized access.
  • Required verification of version information and application of patches or updates.
  • Potential disruption of WordPress services if exploited.

Technical summary

The WordPress HotLock theme, versions up to and including 1.3.9, is vulnerable to PHP Object Injection due to the deserialization of untrusted data. This issue has a CVSS score of 9.8, indicating a high severity level. The vulnerability is caused by the deserialization of untrusted data in the HotLock theme.

Defensive priority

High

Recommended defensive actions

  • Assess exposure of WordPress installations using the HotLock theme, versions up to and including 1.3.9.
  • Prioritize remediation efforts for affected installations.
  • Verify version information and apply vendor-provided patches or updates.

Evidence notes

The CVE record and source item provide details on the vulnerability, including its CVSS score and affected versions. However, additional information on exploitation or impact is limited.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-112851 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-112851

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-112851 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-112851

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.