← Global Threat Landscape
CVE-2020-13671
CWE-434
Critical
97.1
RPSRPS range: 0–105; KEV-listed vulnerabilities can receive an exploitation amplifier.
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.
Source: NVD
Signals
- CVSS
- 8.8
- High · v3.1
- EPSS
- 35.35%
- Probability of exploitation in the next 30 days (FIRST)
- CISA KEV
- In CISA KEV since Jan 2022
- Fix commit
- Fix commit known
- Sources: MoreFixes, FreshFixes
- Weakness
- CWE-434
- Published
- 20 Nov 2020
- Last modified 3 Nov 2025
How to read these signals: RPS · EPSS · CISA KEV · Data sources
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Data as of 8 Oct 2026, 05:16 UK time