CVE-2026-55634Public exploitNetwork attack vectorHinoki check available

Authenticated code execution via unvalidated field names

Published Aug 28, 2026 · Updated Aug 28, 2026

Code injection in affected Pimcore releases allows remote authenticated users with objects permission to execute PHP via field names. The class-definition import path accepts non-identifier characters and writes the raw field name into generated PHP properties and ALTER TABLE identifiers. Ordinary content-editor access reaches the endpoint, and loading an object of the altered class runs attacker-controlled PHP in the server process.

CVSS severity9.9
Critical
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Code injection in affected Pimcore releases allows remote authenticated users with objects permission to execute PHP via field names. The class-definition import path accepts non-identifier characters and writes the raw field name into generated PHP properties and ALTER TABLE identifiers. Ordinary content-editor access reaches the endpoint, and loading an object of the altered class runs attacker-controlled PHP in the server process.

The record

CVE
CVE-2026-55634
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
Pimcore
Product
Pimcore
Classifications
CWE-89, CWE-94, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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=< 11.5.19
  2. Affected versionversion=>= 12.0.0-RC1, < 12.3.10
  3. Affected versionversion=>= 2026.1.0, < 2026.1.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Pimcore · Pimcoreversion=< 11.5.19; version=>= 12.0.0-RC1, < 12.3.10; version=>= 2026.1.0, < 2026.1.6

Published CVSS scores

9.9GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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 exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CWE-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

Public exploit references

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

Technologies

Your stack

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Your stack

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