CVE-2026-126746
CVE-2026-126746 is a vulnerability with no CVSS score yet in drupal/s3fs_cors, published November 11, 2026. No source lists public exploit code. Fixed in drupal/s3fs_cors 1.4.0.
- Severity
- UnratedNo CVSS score yet
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
1.4.0drupal/s3fs_cors
Description
The S3 File System CORS Upload module lets users upload files straight from the browser to Amazon S3 (or an S3-compatible service), using a file widget on entity forms.
The module doesn't sufficiently restrict the upload permission it gives the browser. A user who can upload through the widget can overwrite other files already stored in the bucket, including files they couldn't otherwise replace.
This vulnerability is mitigated by the fact that an attacker must have access to a form that uses the S3 File System CORS Upload widget.
Affected packages
| Package | Affected | Fixed |
|---|---|---|
drupal/s3fs_corsPackagist:https://packages.drupal.org/8 | before 1.4.0 | 1.4.0 |
What each source reports
OSVDRUPAL-CONTRIB-2026-337No score
The S3 File System CORS Upload module lets users upload files straight from the browser to Amazon S3 (or an S3-compatible service), using a file widget on entity forms.
The module doesn't sufficiently restrict the upload permission it gives the browser. A user who can upload through the widget can overwrite other files already stored in the bucket, including files they couldn't otherwise replace.
This vulnerability is mitigated by the fact that an attacker must have access to a form that uses the S3 File System CORS Upload widget.
- Record
DRUPAL-CONTRIB-2026-337- Updated
- 2026-11-11
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.