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Vulnerability · Published Jan 2, 2026 · Assigned by GitHub_M

CVE-2026-21440AdonisJS Path Traversal in Multipart File Handling

Critical 9.2

In plain English

A critical-severity path traversal in core from adonisjs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)9.2Critical
Exploit odds (30 days)1.0%top 36.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
npm@adonisjs/bodyparser10.1.2GHSA-gvq6-hvvp-h34h
npm@adonisjs/bodyparser11.0.0-next.6GHSA-gvq6-hvvp-h34h

Affected products (as reported)

VendorProductVersions
adonisjs core < 10.1.2>= 11.0.0-next.0, < 11.0.0-next.6

Weakness: CWE-22 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References