Authenticated object-link manipulation via missing view checks
Published May 28, 2026 · Updated May 28, 2026
Missing authorization in the Nautobot REST API before 2.4.33 and 3.0.0a2 through 3.1.1 allows remote authenticated users to link hidden objects. The core REST serializer's validate method checked whether a GenericForeignKey target existed without restricting its queryset by the requester's view permission. A user must be able to create or update a GenericForeignKey-bearing record and know the target UUID; exploitation reveals object existence and creates unauthorized database relationships.
Summary
What happened
Missing authorization in the Nautobot REST API before 2.4.33 and 3.0.0a2 through 3.1.1 allows remote authenticated users to link hidden objects. The core REST serializer's validate method checked whether a GenericForeignKey target existed without restricting its queryset by the requester's view permission. A user must be able to create or update a GenericForeignKey-bearing record and know the target UUID; exploitation reveals object existence and creates unauthorized database relationships.
The record
- CVE
- CVE-2026-44794
- Published
- May 28, 2026
- Updated
- May 28, 2026
- Vendor
- Network to Code
- Product
- Nautobot
- Classifications
- CWE-862
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 28, 2026CVE publishedPublication date reported by the CVE source.
- May 28, 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.
- Affected versionversion=< 2.4.33
- Affected versionversion=>= 3.0.0a2, < 3.1.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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