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PatchSiren cyber security CVE debrief

CVE-2026-40760 Edge-Themes CVE debrief

CVE-2026-40760 is an Unauthenticated PHP Object Injection vulnerability in the Behold theme, affecting versions up to and including 1.5. The vulnerability has a CVSS score of 8.1, indicating high severity. It was published on 2026-06-17 and last modified on 2026-06-17. The vulnerability could allow an attacker to execute arbitrary PHP code, potentially leading to unauthorized access, data breaches, or other malicious activities. Administrators and users of the Behold theme, version 1.5 or earlier, should prioritize patching this vulnerability to prevent potential exploitation.

Vendor
Edge-Themes
Product
Behold
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

Administrators and users of the Behold theme, version 1.5 or earlier, should prioritize patching this vulnerability to prevent potential exploitation. This includes reviewing and restricting access to sensitive areas of the website, monitoring for suspicious activity, and implementing additional security measures as needed.

Technical summary

The vulnerability is caused by an unauthenticated PHP object injection in the Behold theme. This could allow an attacker to execute arbitrary PHP code, potentially leading to unauthorized access, data breaches, or other malicious activities. The Behold theme, version 1.5 or earlier, is affected by this vulnerability. Defenders should review and restrict access to sensitive areas of the website and monitor for suspicious activity.

Defensive priority

High

Recommended defensive actions

  • Apply the latest patch or update for the Behold theme to version 1.6 or later.
  • Review and restrict access to sensitive areas of the website.
  • Monitor for suspicious activity and implement additional security measures as needed.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record was published on 2026-06-17T13:20:37.547Z 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.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-06-17T13:20:37.547Z and has not been modified since then. The NVD entry is currently Deferred.