Information disclosure in Drupal Core
CVE-2023-5256
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (56.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.008 · change: +0.001
Affected products
- Drupal Core — versions 10.1, 10.0, 9.5
- Drupal
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.drupal.org/sa-core-2023-006 (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-5256?
- CVE-2023-5256 is a high-severity vulnerability in Drupal Core, classified under Information Disclosure. CVSS score: 7.5/10. Published 2023-09-28.
- How severe is CVE-2023-5256?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-5256 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.