CVE-2023-5256 Drupal core - Critical - Cache poisoning - SA-CORE-2023-006

What is CVE-2023-5256?

CVE-2023-5256 is a high-severity vulnerability in Drupal Drupal, published on 28 Sep 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In certain scenarios, Drupal's JSON:API module will output error backtraces. With some configurations, this may cause sensitive information to be cached and made available to anonymous users, leading to privilege escalation.

This vulnerability only affects sites with the JSON:API module enabled, and can be mitigated by uninstalling JSON:API.

The core REST and contributed GraphQL modules are not affected.

Weakness: CWE-200

Which versions are affected by CVE-2023-5256?

8 open source packages ship an affected version, including drupal/core and drupal. It affects 1 product.

Products include Drupal Drupal.

How do I fix CVE-2023-5256?

Upgrade drupal/core to a fixed version for your release line: 10.0.11, 10.1.4 or 9.5.11.

Is CVE-2023-5256 being exploited?

There is no known exploitation of CVE-2023-5256 in the wild and no public exploit code.

Other vulnerabilities in Drupal Drupal

• CVE-2026-9082 Drupal Core SQL Injection Exploited Critical 9.8
• CVE-2020-13671 Drupal core Un-restricted Upload of File Exploited High 8.8
• CVE-2019-6340 Drupal Core Remote Code Execution Exploited High 8.1
• CVE-2009-3352 Other in n/a Critical 10.0
• CVE-2024-55636 Drupal core - Less critical - Gadget chain - SA-CORE-2024-006 Critical 9.8

All Drupal Drupal vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-drupal-2023-5256, DRUPAL-CORE-2023-006, GHSA-rjqg-3h9m-fx5x, UBUNTU-CVE-2023-5256.