# CVE-2020-13671: Drupal core Un-restricted Upload of File

> CVE-2020-13671: Drupal core Un-restricted Upload of File. CVSS 8.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2020-13671
Last updated: 2025-10-21T23:35:32Z

- Published: 2020-11-20 15:40 UTC · Updated: 2025-10-21 23:35 UTC · Assigner: drupal
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 36.2%, 98th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-01-18, federal due date 2022-07-18, ransomware use: Unknown

## 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.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Drupal: Drupal Core

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2020-13671)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2020-13671)
- [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437/](https://lists.fedoraproject.org/archives/list/package-announce%2540lists.fedoraproject.org/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437/)
- [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT/](https://lists.fedoraproject.org/archives/list/package-announce%2540lists.fedoraproject.org/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT/)
- [https://www.drupal.org/sa-core-2020-012](https://www.drupal.org/sa-core-2020-012)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2020-13671 · Markdown: https://rewindex.com/cve/CVE-2020-13671.md · JSON: https://rewindex.com/api/v1/cves/CVE-2020-13671 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:01:47.585Z