CVE-2026-39560: Select-Themes Hiroshi PHP Object Injection

CVE-2026-39560 · Severity: high · CVSS 8.1 · Published 2026-06-17

The Hiroshi theme for WordPress is vulnerable to a security flaw that allows unauthorized users to inject malicious code. This theme is used to design and manage the appearance of WordPress websites. If exploited, an attacker could potentially take full control of the website, access sensitive customer data, or cause a complete service outage.

Vendors: Select-Themes.

Quick answers

Is CVE-2026-39560 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-39560 being exploited in the wild.
How severe is CVE-2026-39560?
High severity, with a CVSS score of 8.1, published 17 June 2026.
Which products and versions are affected?
Select-Themes Hiroshi <= 1.5.1.
Is there a fix for CVE-2026-39560?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-39560 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-39560?
Check whether you run Select-Themes Hiroshi at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The Hiroshi theme for WordPress (versions <= 1.5.1) is vulnerable to PHP Object Injection via the deserialization of untrusted data (CWE-502). This vulnerability allows an unauthenticated remote attacker to inject PHP objects into the application. If a suitable Property-Oriented Programming (POP) chain is present within the environment, the attacker can achieve remote code execution, SQL injection, or path traversal. The attack vector is network-based and requires no user interaction, though the CVSS complexity is rated as high. A fix is available in version 1.6.

Affected products

  • Select-Themes Hiroshi <= 1.5.1

Timeline

  • 2026-02-12: other: Reported by Denver Jackson
  • 2026-04-08: disclosed: Published by Patchstack
  • 2026-06-17: advisory: NVD published date

References

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