Drupal core does not properly sanitize certain filenames on uploaded files, which can lead to files being interpreted as the incorrect extension and served as the wrong MIME type or executed as PHP for certain hosting configurations. This issue affects: Drupal Drupal Core 9.0 versions prior to 9.0.8, 8.9 versions prior to 8.9.9, 8.8 versions prior to 8.8.11, and 7 versions prior to 7.74.
Published 2020-11-20 16:15:15
Updated 2024-07-24 16:44:55
Source Drupal.org
View at NVD,   CVE.org

CVE-2020-13671 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:
Drupal core Un-restricted Upload of File
CISA required action:
Apply updates per vendor instructions.
CISA description:
Improper sanitization in the extension file names is present in Drupal core.
Added on 2022-01-18 Action due date 2022-07-18

Exploit prediction scoring system (EPSS) score for CVE-2020-13671

1.24%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 84 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-13671

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.5
MEDIUM AV:N/AC:L/Au:S/C:P/I:P/A:P
8.0
6.4
NIST
8.8
HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.8
5.9
NIST

CWE ids for CVE-2020-13671

References for CVE-2020-13671

Products affected by CVE-2020-13671

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