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PatchSiren cyber security CVE debrief

CVE-2026-93931 ThemeREX Group CVE debrief

A critical vulnerability was found in the WordPress Smash theme, versions up to 1.12.0, which allows for PHP Object Injection due to deserialization of untrusted data. This issue, tracked as CVE-2026-93931, has a CVSS score of 9.8, indicating a high severity level. The vulnerability is exploitable via network, requires no authentication or user interaction, and can lead to high impacts on confidentiality, integrity, and availability.

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

Who should care

Defenders and administrators of WordPress installations using the Smash theme should assess their exposure and prioritize remediation. This includes reviewing installed versions of the Smash theme and monitoring for potential exploitation attempts.

Why it matters

CVE-2026-93931 is a critical vulnerability in the WordPress Smash theme that allows for PHP Object Injection. Defenders should prioritize assessing exposure, applying remediation, and monitoring for exploitation attempts.

  • Defenders should assess exposure and apply remediation to prevent potential exploitation.
  • Verify installed versions of the Smash theme to identify vulnerable instances.
  • Monitor for exploitation attempts targeting this vulnerability.

Technical summary

The Smash theme for WordPress, versions up to 1.12.0, is vulnerable to PHP Object Injection due to deserialization of untrusted data. This vulnerability, CVE-2026-93931, has a CVSS score of 9.8 and can be exploited over the network without authentication or user interaction, potentially leading to high impacts on confidentiality, integrity, and availability.

Defensive priority

Defenders should prioritize assessing exposure and applying remediation for this vulnerability, especially in environments where the Smash theme is used.

Recommended defensive actions

  • Assess exposure of WordPress installations using the Smash theme, version 1.12.0 or earlier.
  • Verify if any installed versions of the Smash theme are vulnerable and prioritize remediation.
  • Monitor for potential exploitation attempts targeting this vulnerability.

Evidence notes

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

Sources and references

Verified primary and authoritative sources

  • CVE-2026-93931 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-93931

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

  • CVE-2026-93931 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-93931

    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.