Drupal core - SA-CORE-2022-014
Updated 2022-07-20 19:45 UTC to indicate that this only affects Apache web servers.
Drupal core sanitizes filenames with dangerous extensions upon upload (reference: SA-CORE-2020-012) and strips leading and trailing dots from filenames to prevent uploading server configuration files (reference: SA-CORE-2019-010).
However, the protections for these two vulnerabilities previously did not work correctly together. As a result, if the site were configured to allow the upload of files with an htaccess extension, these files' filenames would not be properly sanitized. This could allow bypassing the protections provided by Drupal core's default .htaccess files and possible remote code execution on Apache web servers.
This issue is mitigated by the fact that it requires a field administrator to explicitly configure a file field to allow htaccess as an extension (a restricted permission), or a contributed module or custom code that overrides allowed file uploads.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | drupal/core | >= 8.0.0, < 9.3.19, >= 9.4.0, < 9.4.3 | 9.3.19, 9.4.3 |
| Drupal (core) | drupal/core | >= 8.0.0, < 9.3.19, >= 9.4.0, < 9.4.3 | 9.3.19, 9.4.3 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2022-25277
- https://github.com/drupal/core/commit/1cd1830d79f221cc8490f53c2bb487dd07094f17
- https://github.com/drupal/core/commit/5d464ea4407c50e40dcf6cb5ee376e7b8dd36f3a
- https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2022-25277.yaml
- https://github.com/drupal/core
- https://www.drupal.org/sa-core-2022-014
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-434- Platform
- Composer, Drupal
- Package
drupal/core- Disclosed
- 20.07.2022
- Updated
- 11.10.2026 13:17
Sources and licenses
OSV / GitHub Advisory Database - GHSA-6955-67hm-vjjq - CC BY 4.0
OSV / GitHub Advisory Database - DRUPAL-CORE-2022-014 - CC BY-SA 2.0; code GPL-2.0-or-later
Vulnerability history: drupal/core
All published vulnerabilities of this package (Drupal (core)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 165
- First → latest
- 02.2018 09.2026
- Without a fix
- 3
- Exploited in attacks
- 5
Severity breakdown
- Critical 17
- High 44
- Medium 72
- Low 6
- Unrated 26
Disclosures per year
- 2018: 4
- 2019: 14
- 2020: 12
- 2021: 11
- 2022: 61
- 2023: 6
- 2024: 36
- 2025: 8
- 2026: 13
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