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Pimcore's Admin Classic Bundle is Missing Function Level Authorization on "Predefined Properties" Listing

Moderate severity GitHub Reviewed Published Jan 15, 2026 in pimcore/pimcore • Updated Jan 15, 2026

Package

composer pimcore/admin-ui-classic-bundle (Composer)

Affected versions

>= 2.0.0-RC1, <= 2.2.2
<= 1.7.15

Patched versions

2.2.3
1.7.16

Description

Summary

The API endpoint for listing Predefined Properties in the Pimcore platform lacks adequate server-side authorization checks. Predefined Properties are configurable metadata definitions (e.g., name, key, type, default value) used across documents, assets, and objects to standardize custom attributes and improve editorial workflows, as documented in Pimcore's official properties guide. Testing confirmed that an authenticated backend user without explicit permissions for property management could successfully call the endpoint and retrieve the complete list of these configurations. This exemplifies Broken Access Control (OWASP Top 10 A01:2021), enabling unauthorized access to administrative features and potentially violating role-based access controls inherent to Pimcore's multi-user environment.

Details

The backend user without permission was still able to list "Predefined Properties" item

Step to Reproduce the issue

login as Admin (full permission) and clicked "Predefined Properties"
Screenshot 2025-12-10 at 10 11 31 PM

Then, captured and saved the request:

  • List API

Screenshot 2025-12-10 at 10 39 53 PM

Next, login a backend user with no permission
Screenshot 2025-12-10 at 9 06 12 PM

The copy the "Cookie" and "X-Pimcore-Csrf-Token"
Screenshot 2025-12-10 at 9 10 47 PM

After that, pasted the copied "Cookie" and "X-Pimcore-Csrf-Token" to captured request

-List API
Uploading Screenshot 2025-12-10 at 10.55.23 PM.png…

Impact

Exploitation allows low-privileged users to enumerate all Predefined Properties, exposing internal metadata schemas, default values, and configuration details that may reveal business logic, data classification strategies, or sensitive defaults (e.g., proprietary keys or select options). In a PIM system like Pimcore, this could facilitate reconnaissance for further attacks, such as targeted data manipulation or privilege escalation, leading to unauthorized alterations of asset/object properties. For organizations handling regulated content (e.g., e-commerce catalogs under GDPR or PCI DSS), such exposure risks compliance breaches, intellectual property leakage, and operational inconsistencies from unintended property overrides.

References

@astapc astapc published to pimcore/pimcore Jan 15, 2026
Published by the National Vulnerability Database Jan 15, 2026
Published to the GitHub Advisory Database Jan 15, 2026
Reviewed Jan 15, 2026
Last updated Jan 15, 2026

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(0th percentile)

Weaknesses

Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Learn more on MITRE.

CVE ID

CVE-2026-23495

GHSA ID

GHSA-hqrp-m84v-2m2f

Source code

Credits

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