CVE-2026-27414: Fuelthemes Werkstatt PHP object injection

CVE-2026-27414 · Severity: high · CVSS 8.8 · Published 2026-07-02

The Werkstatt theme for WordPress is vulnerable to a security flaw that could allow an attacker with basic contributor-level access to compromise the website. By exploiting this issue, a malicious user could potentially take control of the server, access sensitive data, or disrupt site operations. As of the latest report, there is no official patch available from the developer, so site administrators should consider alternative security mitigations.

Technologies: Fuelthemes Werkstatt. Vendors: Fuelthemes.

Quick answers

Is CVE-2026-27414 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-27414 being exploited in the wild.
How severe is CVE-2026-27414?
High severity, with a CVSS score of 8.8, published 2 July 2026.
Which products and versions are affected?
Fuelthemes Werkstatt <= 4.8.3.
Is there a fix for CVE-2026-27414?
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-2026-27414 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-27414?
Check whether you run Fuelthemes Werkstatt 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 Werkstatt theme for WordPress (versions up to and including 4.8.3) is vulnerable to PHP Object Injection due to the deserialization of untrusted data (CWE-502). An attacker with Contributor-level privileges can exploit this vulnerability to inject PHP objects. If a suitable Property-Oriented Programming (POP) chain is present in the environment, this can lead to remote code execution, SQL injection, or path traversal. The attack is reachable over the network and does not require user interaction, though it does require valid low-level authentication. No official patch has been released by the vendor at the time of reporting.

Affected products

  • Fuelthemes Werkstatt <= 4.8.3

Timeline

  • 2025-10-31: other: Vulnerability reported by researcher
  • 2026-06-30: advisory: Patchstack advisory published
  • 2026-07-02: disclosed: CVE published to NVD

References

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