Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N L L N U H H H 8.8 .3535 98.4 YES
AFFECTED Product Versions Fixed Drupal Core 9.0 versions prior to 9.0.8 – —
TIMELINE May 28 Reserved by drupal Nov 20 Published (CNA: drupal) Jan 18 Added to CISA KEV, remediation due 2022-07-18
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.
| Date | Event | Detail |
|---|---|---|
| May 28, 2020 | Reserved | Reserved by drupal |
| November 20, 2020 | Published | Published (CNA: drupal) |
| January 18, 2022 | KEV ADDED | Added to CISA KEV, remediation due 2022-07-18 |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| Drupal | Drupal Core | — | 9.0 versions prior to 9.0.8 | — |
Authoritative record: CVE-2020-13671 at cve.org
Vendors: drupal
Weaknesses: CWE-434
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-13671 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
