What is CVE-2020-13675?

CVE-2020-13675 is a critical-severity vulnerability in Drupal Core, classified under Improper Access Control. CVSS score: 9.8/10. Published 2022-02-11.

How severe is CVE-2020-13675?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Arbitrary file upload in Drupal Core

CVE-2020-13675

Drupal's JSON:API and REST/File modules allow file uploads through their HTTP APIs. The modules do not correctly run all file validation, which causes an access bypass vulnerability. An attacker might be able to upload files that bypass th…

EPSS: 0.012 (65.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Drupal Core — versions 9.2.x, 9.1.x, 8.9.x
Drupal

Weakness classification (CWE)

CWE-284 — Improper Access Control
CWE-434 — Unrestricted Upload of File with Dangerous Type

References

mlhess@drupal.org (x_refsource_CONFIRM, Patch, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2020-13675?: CVE-2020-13675 is a critical-severity vulnerability in Drupal Core, classified under Improper Access Control. CVSS score: 9.8/10. Published 2022-02-11.
How severe is CVE-2020-13675?: Critical severity. CVSS v3 base score is 9.8 out of 10.