Drupal core - SA-CORE-2021-001
The Drupal project uses the pear Archive_Tar library, which has released a security update that impacts Drupal. For more information please see:
Exploits may be possible if Drupal is configured to allow .tar, .tar.gz, .bz2, or .tlz file uploads and processes them.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | drupal/core | >= 8.0.0, < 8.9.13, >= 9.0.0, < 9.0.11, >= 9.1.0, < 9.1.3 | 8.9.13, 9.0.11, 9.1.3 |
| Drupal (core) | drupal/core | >= 8.0.0, < 8.9.13, >= 9.0.0, < 9.0.11, >= 9.1.0, < 9.1.3 | 8.9.13, 9.0.11, 9.1.3 |
References
- Weakness (CWE)
-- Platform
- Composer, Drupal
- Package
drupal/core- Disclosed
- 20.01.2021
- Updated
- 11.10.2026 13:17
Sources and licenses
OSV / GitHub Advisory Database - DRUPAL-CORE-2021-001 - CC BY-SA 2.0; code GPL-2.0-or-later
Vulnerability history: drupal/core
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 146
- First → latest
- 02.2018 09.2026
- Without a fix
- 3
- Exploited in attacks
- 5
Severity breakdown
- Critical 15
- High 40
- Medium 60
- Low 5
- Unrated 26
Disclosures per year
- 2018: 4
- 2019: 14
- 2020: 12
- 2021: 11
- 2022: 55
- 2023: 6
- 2024: 23
- 2025: 8
- 2026: 13
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