Cross-workspace model parameter access via unscoped lookup
Published Sep 21, 2026 · Updated Sep 22, 2026
Authorization bypass in KubeOperator MaxKB 2.10.3-lts and earlier allows remote authenticated users to read or overwrite model parameters. ModelSerializer.ModelParams queries Model by attacker-supplied id without constraining the lookup to the workspace authorized in the route. Exploitation requires model-read permission in an attacker-controlled workspace and a known victim model id; it exposes or changes cross-workspace defaults used by workflows.
Summary
What happened
Authorization bypass in KubeOperator MaxKB 2.10.3-lts and earlier allows remote authenticated users to read or overwrite model parameters. ModelSerializer.ModelParams queries Model by attacker-supplied id without constraining the lookup to the workspace authorized in the route. Exploitation requires model-read permission in an attacker-controlled workspace and a known victim model id; it exposes or changes cross-workspace defaults used by workflows.
The record
- CVE
- CVE-2026-77523
- Published
- Sep 21, 2026
- Updated
- Sep 22, 2026
- Vendor
- KubeOperator
- Product
- MaxKB
- Classifications
- T1565.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 21, 2026CVE publishedPublication date reported by the CVE source.
- Sep 22, 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?
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- Affected versionversion=<= 2.10.3-lts
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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