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PatchSiren cyber security CVE debrief

CVE-2026-39557 Elated-Themes CVE debrief

CVE-2026-39557 is a high-severity vulnerability in the NeoBeat theme for WordPress, with a CVSS score of 8.1. It allows unauthenticated PHP object injection, potentially leading to code execution. This type of vulnerability can be particularly dangerous as it may allow attackers to execute arbitrary PHP code on vulnerable installations, potentially leading to full control of the affected system. The vulnerability affects NeoBeat theme version 1.7 or earlier, and site administrators should prioritize patching to prevent potential code execution.

Vendor
Elated-Themes
Product
NeoBeat
CVSS
HIGH 8.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-17
Original CVE updated
2026-06-17
Advisory published
2026-06-17
Advisory updated
2026-06-17

Who should care

WordPress site administrators using the NeoBeat theme version 1.7 or earlier should prioritize patching this vulnerability to prevent potential code execution. Additionally, security teams and vulnerability management teams should be aware of the potential risks associated with this vulnerability and plan accordingly.

Technical summary

The vulnerability is caused by an unauthenticated PHP object injection weakness in the NeoBeat theme. This could allow attackers to execute arbitrary PHP code on vulnerable installations. The vulnerability is particularly concerning due to its potential for code execution and its high CVSS score of 8.1. Affected product deployments should be identified and patched as soon as possible to mitigate the risk.

Defensive priority

High priority due to potential for code execution and high CVSS score.

Recommended defensive actions

  • Apply the latest patch or update to NeoBeat theme version 1.8 or later
  • Review and restrict file permissions where possible
  • Monitor for suspicious activity related to PHP object injection
  • Consider implementing a web application firewall (WAF) to detect and block exploitation attempts
  • Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The CVE record was published on 2026-06-17T13:20:20.310Z and last modified on 2026-06-17T14:44:26.397Z. The NVD entry is currently Deferred. Evidence is limited to public sources and may not reflect the full scope of affected systems or potential impacts. Defenders should verify the vulnerability's existence and potential exposure within their environments.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-39557 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-39557

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

  • CVE-2026-39557 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-39557

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

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.