CVE-2020-13671
Detail
Description
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.
Metrics
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 Severity and Vector Strings:
Vector:
(AV:N/AC:L/Au:S/C:P/I:P/A:P)
References to Advisories, Solutions, and Tools
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This CVE is in CISA's Known Exploited Vulnerabilities Catalog
Reference
CISA's BOD 22-01 and Known
Exploited Vulnerabilities Catalog for further guidance and requirements.
| Vulnerability Name |
Date Added |
Due Date |
Required Action |
| Drupal core Un-restricted Upload of File |
01/18/2022 |
07/18/2022 |
Apply updates per vendor instructions. |
Change History
16 change records found show changes
CVE Modified by CISA-ADP
6/16/2026 10:53:32 PM
| Action |
Type |
Old Value |
New Value |
| Added |
SSVC |
{"timestamp":"2025-02-07T12:38:31.133573Z","id":"CVE-2020-13671","options":[{"exploitation":"active"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}
|
CVE Modified by Drupal.org
6/16/2026 10:53:32 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Affected |
[{"vendor":"Drupal","product":"Drupal Core","versions":[{"version":"9.0 versions prior to 9.0.8","status":"affected"},{"version":"8.9 versions prior to 8.9.9","status":"affected"},{"version":"8.8 versions prior to 8.8.11","status":"affected"},{"version":"7 versions prior to 7.74","status":"affected"}]}]
|
Modified Analysis by NIST
11/03/2025 1:06:21 PM
| Action |
Type |
Old Value |
New Value |
| Changed |
CPE Configuration |
OR
*cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* versions from (including) 8.8 up to (excluding) 8.8.11
*cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* versions from (including) 8.9 up to (excluding) 8.9.9
*cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* versions from (including) 9.0 up to (excluding) 9.0.8
*cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* versions from (including) 7.0 up to (excluding) 7.74
|
OR
*cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* versions from (including) 7.0 up to (excluding) 7.74
*cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* versions from (including) 8.8.0 up to (excluding) 8.8.11
*cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* versions from (including) 8.9.0 up to (excluding) 8.9.9
*cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (excluding) 9.0.8
|
| Added |
Reference Type |
CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13671 Types: US Government Resource
|
CVE Modified by CISA-ADP
10/21/2025 8:16:57 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13671
|
CVE Modified by CISA-ADP
10/21/2025 4:17:47 PM
| Action |
Type |
Old Value |
New Value |
| Removed |
Reference |
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13671
|
CVE Modified by CISA-ADP
10/21/2025 3:18:19 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13671
|
Modified Analysis by NIST
3/14/2025 4:50:29 PM
| Action |
Type |
Old Value |
New Value |
CVE Modified by CISA-ADP
2/07/2025 8:15:28 AM
| Action |
Type |
Old Value |
New Value |
| Added |
CVSS V3.1 |
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
|
| Added |
CWE |
CWE-434
|
CVE Modified by CVE
11/21/2024 12:01:43 AM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437/
|
| Added |
Reference |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT/
|
| Added |
Reference |
https://www.drupal.org/sa-core-2020-012
|
Modified Analysis by NIST
7/24/2024 12:44:54 PM
| Action |
Type |
Old Value |
New Value |
| Changed |
Reference Type |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437/ No Types Assigned
|
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437/ Mailing List, Release Notes
|
| Changed |
Reference Type |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT/ No Types Assigned
|
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT/ Mailing List, Release Notes
|
CVE Modified by Drupal.org
5/14/2024 2:24:29 AM
| Action |
Type |
Old Value |
New Value |
CVE Modified by Drupal.org
11/06/2023 10:16:47 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
Drupal.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437/ [No types assigned]
|
| Added |
Reference |
Drupal.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT/ [No types assigned]
|
| Removed |
Reference |
Drupal.org https://lists.fedoraproject.org/archives/list/[email protected]/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437/
|
| Removed |
Reference |
Drupal.org https://lists.fedoraproject.org/archives/list/[email protected]/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT/
|
Modified Analysis by NIST
1/01/2022 1:19:18 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
OR
*cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
*cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
|
| Changed |
Reference Type |
https://lists.fedoraproject.org/archives/list/[email protected]/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437/ No Types Assigned
|
https://lists.fedoraproject.org/archives/list/[email protected]/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437/ Mailing List, Third Party Advisory
|
| Changed |
Reference Type |
https://lists.fedoraproject.org/archives/list/[email protected]/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT/ No Types Assigned
|
https://lists.fedoraproject.org/archives/list/[email protected]/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT/ Mailing List, Third Party Advisory
|
CVE Modified by Drupal.org
12/14/2020 11:15:10 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
https://lists.fedoraproject.org/archives/list/[email protected]/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437/ [No Types Assigned]
|
CVE Modified by Drupal.org
12/14/2020 10:15:11 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
https://lists.fedoraproject.org/archives/list/[email protected]/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT/ [No Types Assigned]
|
Initial Analysis by NIST
12/03/2020 10:23:57 AM
| Action |
Type |
Old Value |
New Value |
| Added |
CVSS V3.1 |
NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
|
| Added |
CVSS V2 |
NIST (AV:N/AC:L/Au:S/C:P/I:P/A:P)
|
| Added |
CWE |
NIST CWE-434
|
| Added |
CPE Configuration |
OR
*cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* versions from (including) 7.0 up to (excluding) 7.74
*cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* versions from (including) 8.8 up to (excluding) 8.8.11
*cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* versions from (including) 8.9 up to (excluding) 8.9.9
*cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* versions from (including) 9.0 up to (excluding) 9.0.8
|
| Changed |
Reference Type |
https://www.drupal.org/sa-core-2020-012 No Types Assigned
|
https://www.drupal.org/sa-core-2020-012 Vendor Advisory
|
Quick Info
CVE Dictionary Entry: CVE-2020-13671 NVD
Published Date: 11/20/2020 NVD
Last Modified: 06/16/2026
Source: Drupal.org
|
