CVE-2026-27414Network attack vector

Contributor-level object injection via unsafe deserialization

Published Jul 2, 2026 · Updated Jul 2, 2026

PHP object injection in Fuel Themes Werkstatt 4.8.3 and earlier allows remote authenticated users to inject PHP objects. The theme deserializes untrusted input, but public records do not identify the affected function, request parameter, or data path. Contributor-level access or higher is required; further impact depends on a suitable POP chain from another installed plugin or theme, which can enable file deletion, sensitive-data retrieval, or code execution.

CVSS severity8.8
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

PHP object injection in Fuel Themes Werkstatt 4.8.3 and earlier allows remote authenticated users to inject PHP objects. The theme deserializes untrusted input, but public records do not identify the affected function, request parameter, or data path. Contributor-level access or higher is required; further impact depends on a suitable POP chain from another installed plugin or theme, which can enable file deletion, sensitive-data retrieval, or code execution.

The record

CVE
CVE-2026-27414
Published
Jul 2, 2026
Updated
Jul 2, 2026
Vendor
Fuel Themes
Product
Werkstatt
Classifications
CWE-502, CAPEC-586, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=4.8.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Fuel Themes · Werkstattversion=n/a <=4.8.3

Published CVSS scores

8.8PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
CAPEC-586Object Injection
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo