Severity:

HIGH RISK

(8.8)

Unrestricted File Upload via Extension Bypass (CWE-434) in Cockpit Bucket Component

CVE-2026-38991

Published:

Apr 29, 2026

Status:

Deferred

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Vulnerability Type

Vulnerability Type

Category:

Unrestricted File Upload / Type Bypass

CWE:

CWE-434

Impact:

Remote Code Execution (post-authentication)

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Unrestricted File Upload / Type Bypass

CWE:

CWE-434

Impact:

Remote Code Execution (post-authentication)

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.