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ezsystems/ezpublish-legacy has a SQL injection in dfscleanup

High severity GitHub Reviewed Published May 18, 2026 in ezsystems/ezpublish-legacy • Updated May 29, 2026

Package

composer ezsystems/ezpublish-legacy (Composer)

Affected versions

= 2019.03

Patched versions

None

Description

NB: All tags and branches in this repository are past their end of life, so the vulnerability will not be fixed. The advisory is posted on the request of the researcher, for the information of anyone who might still use this software.

Impact

There is a security vulnerability in eZ Publish Legacy, affecting the dfscleanup.php script and the _getFileList function of the eZDFSFileHandlerMySQLiBackend class (kernel/private/classes/clusterfilehandlers/dfsbackends/mysqli.php). The vulnerability allows an attacker with local shell access and sufficient privileges to run dfscleanup.php to perform a union-based SQL injection against the eZ Publish MySQL database, potentially exposing sensitive data such as user credentials.

It is known to affect the branch 2019.03, and it may well affect other branches.

Credit

The issue was found and reported by security auditor Timothé Ridel from Advens:
https://www.advens.com/

Patches

None, the software is past its end of life.

Workarounds

None.

Resources

References

@glye glye published to ezsystems/ezpublish-legacy May 18, 2026
Published to the GitHub Advisory Database May 29, 2026
Reviewed May 29, 2026
Last updated May 29, 2026

Severity

High

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
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.
(4th percentile)

Weaknesses

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data. Learn more on MITRE.

CVE ID

CVE-2026-38739

GHSA ID

GHSA-xg9x-h37w-h3r3

Source code

Credits

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