# CVE-2026-39554: Elated-Themes Fidalgo PHP Object Injection

Source: https://junglewise.ai/threats/cve-2026-39554-elated-themes-fidalgo-php-object-injection  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-17. Updated: 2026-06-17  
License: CC BY 4.0 with a link back

CVE-2026-39554 · Severity: high · CVSS 8.1 · Published 2026-06-17

The Fidalgo theme for WordPress is vulnerable to a security flaw that allows unauthorized individuals to inject malicious code into the website. This type of vulnerability is often used in large-scale automated attacks to take over websites, steal sensitive data, or disrupt services. Site owners should update to version 1.3 immediately to protect their operations and reputation.

Vendors: [Elated-Themes](https://junglewise.ai/threats/vendors/elated-themes).

## Quick answers

**Is CVE-2026-39554 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-39554 being exploited in the wild.

**How severe is CVE-2026-39554?** High severity, with a CVSS score of 8.1, published 17 June 2026.

**Which products and versions are affected?** Elated-Themes Fidalgo <= 1.2.2.

**Is there a fix for CVE-2026-39554?** 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-2026-39554 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-39554?** Check whether you run Elated-Themes Fidalgo 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

A PHP Object Injection vulnerability (CWE-502) exists in the Elated-Themes Fidalgo theme for WordPress in versions up to and including 1.2.2. The flaw stems from the deserialization of untrusted data, which allows an unauthenticated remote attacker to inject arbitrary PHP objects. If a suitable Property-Oriented Programming (POP) chain is present in the environment, this can be leveraged to achieve remote code execution, SQL injection, or file system traversal. The attack requires no user interaction or privileges, though the CVSS vector indicates high complexity (AC:H). A patch is available in version 1.3.

## Affected products

- Elated-Themes Fidalgo <= 1.2.2

## Timeline

- 2026-02-12: other: Reported by Denver Jackson
- 2026-04-08: disclosed: Vulnerability details published by Patchstack
- 2026-06-17: advisory: NVD advisory published

## References

- [https://wordpress.org/themes](https://wordpress.org/themes)
- [https://patchstack.com/database/wordpress/theme/fidalgo/vulnerability/wordpress-fidalgo-theme-1-2-2-php-object-injection-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/theme/fidalgo/vulnerability/wordpress-fidalgo-theme-1-2-2-php-object-injection-vulnerability?_s_id=cve)