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CVE-2026-53471

Kebev2v Migration Assessment broken access control

9.6 CRITICALEPSS 0.51%
  1. Published10 Jun 2026

Description

A flaw was found in migration-planner. The agent-API middleware processes JSON Web Tokens (JWTs) for authentication, but its UpdateSourceInventory and UpdateAgentStatus handlers fail to validate the source_id claim within these tokens against the requested source ID. This oversight allows an authenticated attacker with a valid agent token to manipulate data across different tenants, leading to a complete collapse of tenant isolation. This could result in unauthorized overwriting of victim inventory, planting of malicious credential URLs, or corruption of migration assessments.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Affected products

Kebev2v Migration Assessment< 0.13.5

Remediation

Fixed in
Kebev2v Migration Assessment≥ 0.13.5

References

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Frequently asked

Is CVE-2026-53471 being actively exploited?

CVE-2026-53471 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.51%.

How severe is CVE-2026-53471?

CVE-2026-53471 has a CVSS 3.1 base score of 9.6, rated critical. EPSS estimates a 0.51% probability of exploitation.

Which products are affected by CVE-2026-53471?

Affected products include Kebev2v Migration Assessment.

How do I fix CVE-2026-53471?

Upgrade affected software to a fixed version, for example Kebev2v Migration Assessment 0.13.5 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-53471 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.