Is this vulnerability remotely exploitable?

Yes. If an application exposes an HTTP endpoint that accepts file uploads via Python-Multipart with the vulnerable configuration, a remote client can exploit the issue by sending specially crafted filenames in multipart/form-data requests.

What level of access does an attacker need?

The attacker needs the ability to submit file uploads to the affected endpoint. Whether authentication is required depends on the application's access controls, but no local filesystem access is needed beyond the upload interface.

What is the safest general fix pattern?

The most robust fix is to stop using client-supplied filenames when constructing filesystem paths. Generate server-side filenames, store user-visible names as metadata only, and enforce that the computed storage path is always within a dedicated upload directory with restricted permissions.

Severity:

HIGH RISK

(8.6)

Path Traversal (CWE-22) via Uploaded Filenames in Python-Multipart File Handling

CVE-2026-24486

Published:

Jan 26, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-306

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

Path Traversal

CWE:

CWE-22

Impact:

Arbitrary File Write on Server Filesystem

Severity:

HIGH RISK

(8.6)

CVSS Version:

3.1

Vulnerability Type

Category:

Path Traversal

CWE:

CWE-22

Impact:

Arbitrary File Write on Server Filesystem

Severity:

HIGH RISK

(8.6)

CVSS Version:

3.1

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Path Traversal (CWE-22) via Uploaded Filenames in Python-Multipart File Handling

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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