CVE-2020-13671
KEVHIGH 8.8EPSS 36.2%
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.
- Affected
- Drupal · Drupal Core
- CVSS v3.1 NVD
- 8.8 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS v3.1 GitHub
- 8.8 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H - CVSS v2.0 NVD
- 6.5 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P - EPSS
- 36.17% chance of exploitation in the next 30 days, 98th percentile
- CISA KEV
- added 2022-01-18
- Published
- 2020-11-20
- Updated
- 2025-10-21
Proof-of-concept exploits (3)
- Dungsocool/CVE-2020-136710★ · 2026-08-22
- Dungsocool/CVE-2020-13671-old0★ · 2026-08-22
- ivanesk315/CVE-2020-136710★ · 2026-09-10
Security advisories
- https://www.drupal.org/sa-core-2020-012
- advisories/GHSA-68jc-v27h-vhmw
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/…
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/…