CVE-2026-46413
Medium
Description
Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, regular users could route direct S3 multipart uploads through ExternalUploadManager into the admin backup store. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Discourse
PublishedJul 9, 2026
First seenJul 9, 2026
Weakness typeCWE-862Missing authorization
How to fix
Update
- discourse discourse2026.1.5, 2026.4.2, 2026.5.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| discourse discourse | 2026.1.0 ≤ v < 2026.1.5, 2026.4.0 ≤ v < 2026.4.2, 2026.5.0 ≤ v < 2026.5.1, 2026.6.0 | 2026.1.5, 2026.4.2, 2026.5.1 |
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