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CVE-2026-40735 Edge-Themes CVE debrief

CVE-2026-40735 is a high-severity vulnerability in Reina theme versions <= 2.1, allowing unauthenticated PHP object injection. This vulnerability has a CVSS score of 8.1 and is considered HIGH severity. The vulnerability was published on June 17, 2026, and last modified on the same day. Users of Reina theme versions <= 2.1 are advised to take immediate action to mitigate this vulnerability. The vulnerability is caused by a lack of proper input validation, allowing attackers to inject malicious PHP objects. This could lead to arbitrary code execution, data breaches, or other malicious activities. Organizations using the affected theme should prioritize patching or updating to a secure version.

Vendor
Edge-Themes
Product
Reina
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 Reina theme versions <= 2.1, as well as security teams responsible for monitoring and patching vulnerabilities, should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

CVE-2026-40735 is an unauthenticated PHP object injection vulnerability in Reina theme versions <= 2.1. The vulnerability is caused by a lack of proper input validation, allowing attackers to inject malicious PHP objects. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating a high severity vulnerability that can be exploited remotely with high attack complexity and no privileges required.

Defensive priority

high

Recommended defensive actions

  • Update Reina theme to a version greater than 2.1
  • Apply patches or hotfixes provided by the vendor
  • Monitor for suspicious activity and implement additional security measures
  • Restrict access to sensitive areas of the website
  • Implement a web application firewall (WAF) to detect and prevent attacks
  • Regularly review and update software and plugins
  • Consider using a security information and event management (SIEM) system

Evidence notes

The information provided is based on data from official sources, including CVE.org and NVD. The vulnerability was reported by Patchstack and has been confirmed by official sources.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-40735 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-40735

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

  • CVE-2026-40735 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-40735

    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.