DRUPAL-CORE-2023-004

Drupal core provides a page that outputs the markup from `phpinfo()` to assist with diagnosing PHP configuration.

Not rated yet Packagist

Severity: Not rated yet; No source has published a CVSS score yet
Exploit chance (EPSS): —; No score published
Known exploited: No; Not in CISA's catalog
Weakness: —; Not classified
Fix: 10.0.5; Upgrade drupal/core to this version or later

Description

Drupal core provides a page that outputs the markup from phpinfo() to assist with diagnosing PHP configuration.

If an attacker was able to achieve an XSS exploit against a privileged user, they may be able to use the phpinfo page to access sensitive information that could be used to escalate the attack.

This vulnerability is mitigated by the fact that a successful XSS exploit is required in order to exploit it.

Affected versions

Packagist

Package	Vulnerable	Fixed in
drupal/core	`>= 8.0.0, < 9.4.12` `>= 9.5.0, < 9.5.5` `>= 10.0.0, < 10.0.5`	`9.4.12` `9.5.5` `10.0.5`

How to fix

Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.

drupal/core Packagist → `10.0.5`

composer

composer require drupal/core:^10.0.5

References

Timeline

Mar 15, 2023 Published
Sep 19, 2026 Last updated by the source

Advisory	Severity	Why it's related
DRUPAL-CORE-2026-004 Drupal Core has a SQL Injection issue	Critical Known exploited	Also affects drupal/core
CVE-2020-28949 Multiple vulnerabilities through filename manipulation in Archive_Tar	High Known exploited	Also affects drupal/core
CVE-2020-13671 Drupal core Unrestricted Upload of File with Dangerous Type	High Known exploited	Also affects drupal/core
CVE-2019-6340 Drupal Core Remote Code Execution Vulnerability	High Known exploited	Also affects drupal/core
CVE-2018-7602 Drupal Core Remote Code Execution Vulnerability	Critical Known exploited	Also affects drupal/core
CVE-2018-7600 Drupal Core Remote Code Execution Vulnerability	Critical Known exploited	Also affects drupal/core
DRUPAL-CORE-2026-016 The Navigation module doesn't sufficiently sanitize certain attributes, which can lead to a cross-site scripting (XSS) vulnerability.	Not rated yet	Also affects drupal/core
DRUPAL-CORE-2026-015 The Drupal core Link module provides a field type that can be used for internal and external URLs.	Not rated yet	Also affects drupal/core

Credits: Elar Lang, Janek Vind

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