CVE-2026-21440
AdonisJS Path Traversal in Multipart File Handling
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.
INFO
Published Date :
Jan. 2, 2026, 7:15 p.m.
Last Modified :
Jan. 8, 2026, 6:09 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-21440
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Update @adonisjs/bodyparser to version 10.1.2 or later.
- Update @adonisjs/bodyparser to version 11.0.0-next.6 or later.
- Verify the version of @adonisjs/bodyparser.
Public PoC/Exploit Available at Github
CVE-2026-21440 has a 7 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-21440.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-21440 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-21440
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Python
poc and writeup for cve-2026-21440: a critical path traversal vulnerability in @adonisjs/bodyparser allowing arbitrary file writing
adonisjs exploit nodejs path-traversal poc rce security-writeup vulnerability-research cve-2026-21440
Dockerfile Python TypeScript
Advanced detection-only PoC for CVE-2026-21440 affecting AdonisJS BodyParser. No exploitation included.
Python
CVE-2026-21440
Python
Security Detective for React, Next.js, Node.js & npm - CVE scanner, malware detector, secrets finder, SBOM generator. 60+ commands. Zero config.
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Python Shell
TOP All bugbounty pentesting CVE-2023- POC Exp RCE example payload Things
bugbounty cve exp exploit payload poc rce vulnerability
Shell
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
security cve exploit poc vulnerability
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-21440 vulnerability anywhere in the article.
-
CybersecurityNews
Critical AdonisJS Vulnerability Allow Remote Attacker to Write Files On Server
A critical path traversal vulnerability in AdonisJS has been discovered that could allow remote attackers to write arbitrary files to server filesystems, potentially leading to complete system comprom ... Read more
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The Hacker News
Critical AdonisJS Bodyparser Flaw (CVSS 9.2) Enables Arbitrary File Write on Servers
Jan 06, 2026Ravie LakshmananVulnerability / Web Security Users of the "@adonisjs/bodyparser" npm package are being advised to update to the latest version following the disclosure of a critical secu ... Read more
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Daily CyberSecurity
CVE-2026-21440: New AdonisJS 9.2 Critical Flaw Allows Arbitrary File Writes and RCE
A critical security vulnerability has been discovered in AdonisJS, a popular full-stack Node.js web framework known for its focus on ergonomics and speed. The flaw, assigned a CVSS score of 9.2, resid ... Read more
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Daily CyberSecurity
“Sliver” in the Stack: Exposed Logs Reveal Targeted FortiWeb Exploitation Campaign
Image: c0baltstrik3d A sophisticated threat actor has been caught leveraging exposed logs and databases to orchestrate a targeted campaign against FortiWeb appliances, using the open-source Sliver C2 ... Read more
-
Daily CyberSecurity
The Sleeper in Your Browser: How DarkSpectre Turned 8.8 Million Extensions into State-Aligned Spies
In a revelation that exposes a gaping hole in the browser extension ecosystem, Koi Security has unmasked a massive, state-aligned cyber-espionage operation that has been quietly gathering intelligence ... Read more
The following table lists the changes that have been made to the
CVE-2026-21440 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Jan. 02, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-22 Added Reference https://github.com/adonisjs/bodyparser/commit/143a16f35602be8561215611582211dec280cae6 Added Reference https://github.com/adonisjs/bodyparser/commit/6795c0e3fa824ae275bbd992aae60609e96f0f03 Added Reference https://github.com/adonisjs/bodyparser/releases/tag/v10.1.2 Added Reference https://github.com/adonisjs/bodyparser/releases/tag/v11.0.0-next.6 Added Reference https://github.com/adonisjs/core/security/advisories/GHSA-gvq6-hvvp-h34h