CVE-2026-55622Public exploitNetwork attack vector

Secret disclosure via unchecked cross-project instance copy

Published Aug 21, 2026 · Updated Aug 21, 2026

Improper access control in Incus before 7.2.0 allows remote authenticated users to copy instances from unauthorized projects. During POST /1.0/instances, instances.go authorizes only the target project, while instances_post.go loads req.Source.Project without verifying access to the source instance. Exploitation requires a remotely reachable daemon, valid client credentials, and both restricted project and instance names; copied instances can expose their secrets.

CVSS severity7.7
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Incus before 7.2.0 allows remote authenticated users to copy instances from unauthorized projects. During POST /1.0/instances, instances.go authorizes only the target project, while instances_post.go loads req.Source.Project without verifying access to the source instance. Exploitation requires a remotely reachable daemon, valid client credentials, and both restricted project and instance names; copied instances can expose their secrets.

The record

CVE
CVE-2026-55622
Published
Aug 21, 2026
Updated
Aug 21, 2026
Vendor
Linux Containers
Product
Incus
Classifications
CWE-284, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 7.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Linux Containers · Incusversion=< 7.2.0

Published CVSS scores

7.7GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
T1210Exploitation of Remote Services

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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