Is this vulnerability remotely exploitable?

Yes, it can be exploited remotely, but only by authenticated users who can reach the LXD API or CLI endpoint and have permission to create or import instances in a project. It is not exploitable by unauthenticated outsiders.

What level of access does an attacker need to exploit this issue?

The attacker needs valid LXD credentials and instance-creation permissions within a restricted project. With that access, they can import a crafted backup archive that bypasses the project's restrictions.

What is the safest general fix pattern?

The safest pattern is to consolidate configuration validation so that: - There is a single authoritative configuration source for instance creation, and - All project restrictions and security policies are enforced directly against that source at the moment of use. Additionally, the low-level instance creation logic should refuse configurations that violate project or tenant restrictions, regardless of how the configuration was supplied.

Severity:

CRITICAL RISK

(9.1)

Improper Input Validation (CWE-20) in Canonical LXD Backup Import Project Restrictions

CVE-2026-34178

Published:

Apr 9, 2026

Status:

Received

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-77;CWE-78

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI Handler setAccessDeviceCfg

Remote Code Execution on the Router

April 12, 2026

CWE-77;CWE-78

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI setLedCfg Handler

Remote Code Execution on the Router

April 12, 2026

Vulnerability Type

Category:

Improper Input Validation

CWE:

CWE-20

Impact:

Privilege Escalation to Host Compromise

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Improper Input Validation

CWE:

CWE-20

Impact:

Privilege Escalation to Host Compromise

Severity:

CRITICAL RISK

(9.1)

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.

Get Started

Ship clean & secure code faster

START 14 DAYS FREE TRIAL

BOOK A DEMO

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Improper Input Validation (CWE-20) in Canonical LXD Backup Import Project Restrictions

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)

OS Command Injection (CWE-78) in Totolink A7100RU CGI Handler setAccessDeviceCfg

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI setLedCfg Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare