CVE-2026-21440
Critical
Description
AdonisJS is a TypeScript-first web framework. A Path Traversal vulnerability in AdonisJS multipart file handling may allow a remote attacker to write arbitrary files to arbitrary locations on the server filesystem. This impacts @adonisjs/bodyparser through version 10.1.1 and 11.x prerelease versions prior to 11.0.0-next.6. This issue has been patched in @adonisjs/bodyparser versions 10.1.2 and 11.0.0-next.6.
SeverityCritical
CVSS9.2
Exploit probability—
Product@adonisjs/bodyparser
PublishedJan 2, 2026
First seenJan 2, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- @adonisjs/bodyparser10.1.2, 11.0.0-next.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| @adonisjs/bodyparsernpm | v < 10.1.2, 11.0.0-next.0 ≤ v < 11.0.0-next.6 | 10.1.2, 11.0.0-next.6 |
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