CVE-2026-33743: CWE-770: Allocation of Resources Without Limits or Throttling in lxc incus
CVE-2026-33743 is a medium severity vulnerability in the Incus system container and virtual machine manager prior to version 6. 23. 0. It involves allocation of resources without limits or throttling when processing specially crafted storage bucket backups. An attacker with access to the storage bucket feature can exploit this to crash the Incus daemon, causing a denial of service of the control plane API. This does not affect running workloads or existing containers and virtual machines, which continue operating normally. The issue is fixed in version 6. 23. 0.
AI Analysis
Technical Summary
Incus versions before 6.23.0 contain a resource allocation vulnerability (CWE-770) triggered by specially crafted storage bucket backups. A user with access to the storage bucket feature can cause the Incus daemon to crash repeatedly, resulting in denial of service to the control plane API. The vulnerability does not impact running workloads or existing containers and virtual machines. The flaw is addressed in Incus version 6.23.0.
Potential Impact
Exploitation of this vulnerability allows an attacker with storage bucket access to crash the Incus daemon repeatedly, causing denial of service to the control plane API. However, it does not affect running workloads or existing containers and virtual machines, which remain operational during the attack.
Mitigation Recommendations
Upgrade Incus to version 6.23.0 or later, where this vulnerability is fixed. Since this is an official fix, applying the update fully mitigates the issue. No other mitigations are indicated.
CVE-2026-33743: CWE-770: Allocation of Resources Without Limits or Throttling in lxc incus
Description
CVE-2026-33743 is a medium severity vulnerability in the Incus system container and virtual machine manager prior to version 6. 23. 0. It involves allocation of resources without limits or throttling when processing specially crafted storage bucket backups. An attacker with access to the storage bucket feature can exploit this to crash the Incus daemon, causing a denial of service of the control plane API. This does not affect running workloads or existing containers and virtual machines, which continue operating normally. The issue is fixed in version 6. 23. 0.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Incus versions before 6.23.0 contain a resource allocation vulnerability (CWE-770) triggered by specially crafted storage bucket backups. A user with access to the storage bucket feature can cause the Incus daemon to crash repeatedly, resulting in denial of service to the control plane API. The vulnerability does not impact running workloads or existing containers and virtual machines. The flaw is addressed in Incus version 6.23.0.
Potential Impact
Exploitation of this vulnerability allows an attacker with storage bucket access to crash the Incus daemon repeatedly, causing denial of service to the control plane API. However, it does not affect running workloads or existing containers and virtual machines, which remain operational during the attack.
Mitigation Recommendations
Upgrade Incus to version 6.23.0 or later, where this vulnerability is fixed. Since this is an official fix, applying the update fully mitigates the issue. No other mitigations are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-23T17:34:57.561Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69c5ba613c064ed76fe1f5d1
Added to database: 3/26/2026, 10:59:45 PM
Last enriched: 4/3/2026, 1:43:05 PM
Last updated: 5/11/2026, 7:16:30 AM
Views: 85
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.