CVE-2026-62940: CWE-862: Missing Authorization in lxc incus
Incus is a system container and virtual machine manager. Prior to version 7.3.0, when migrating an instance to another cluster member, user-supplied configuration overrides (including security-critical keys like `security.privileged` and `raw.lxc`) are applied without any project restriction enforcement, allowing a restricted project user to escalate to a privileged container and escape to the host. Version 7.3.0 patches the issue.
AI Analysis
Technical Summary
Incus versions prior to 7.3.0 contain a missing authorization vulnerability (CWE-862) during instance migration between cluster members. User-supplied configuration overrides are applied without project restriction enforcement, enabling restricted users to escalate privileges by setting security-critical keys such as `security.privileged` and `raw.lxc`. This can lead to container privilege escalation and host escape. The vulnerability has a CVSS 3.1 score of 9.9, indicating critical severity. Version 7.3.0 includes a patch that addresses this issue.
Potential Impact
An attacker with restricted project user privileges can escalate to a privileged container and potentially escape to the host system, leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability with high impact.
Mitigation Recommendations
Upgrade Incus to version 7.3.0 or later where this vulnerability is patched. Since no official patch link or advisory is provided, verify the upgrade path with the vendor or official project resources. Patch status is not yet confirmed by vendor advisory; check vendor sources for current remediation guidance.
CVE-2026-62940: CWE-862: Missing Authorization in lxc incus
Description
Incus is a system container and virtual machine manager. Prior to version 7.3.0, when migrating an instance to another cluster member, user-supplied configuration overrides (including security-critical keys like `security.privileged` and `raw.lxc`) are applied without any project restriction enforcement, allowing a restricted project user to escalate to a privileged container and escape to the host. Version 7.3.0 patches the issue.
CVSS v3.1
Score 9.9critical
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Incus versions prior to 7.3.0 contain a missing authorization vulnerability (CWE-862) during instance migration between cluster members. User-supplied configuration overrides are applied without project restriction enforcement, enabling restricted users to escalate privileges by setting security-critical keys such as `security.privileged` and `raw.lxc`. This can lead to container privilege escalation and host escape. The vulnerability has a CVSS 3.1 score of 9.9, indicating critical severity. Version 7.3.0 includes a patch that addresses this issue.
Potential Impact
An attacker with restricted project user privileges can escalate to a privileged container and potentially escape to the host system, leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability with high impact.
Mitigation Recommendations
Upgrade Incus to version 7.3.0 or later where this vulnerability is patched. Since no official patch link or advisory is provided, verify the upgrade path with the vendor or official project resources. Patch status is not yet confirmed by vendor advisory; check vendor sources for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-14T22:32:17.730Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8869e9acd9273b494e4743
Added to database: 08/21/2026, 15:08:25 UTC
Last enriched: 08/21/2026, 15:22:17 UTC
Last updated: 08/21/2026, 15:31:10 UTC
Views: 5
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.