CVE-2026-53471: Github.com/kubev2v/migration planner Remote Code Execution Vulnerability

CRITICAL
Advisory Identifier: GHSA-2fqw-7c6r-2cq6
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CVSS 9.6
CWE-639
Published
Advisory Summary

CVE-2026-53471 is a CRITICAL (CVSS 9.6) remote code execution vulnerability (CWE-639: Authorization Bypass Through User-Controlled Key) affecting Github.com/kubev2v/migration planner libraries in the Go ecosystem. The issue involves openshift migration advisor agent-api fails to validate jwt source_id claim, allowing cross-tenant data manipulation. Remediation is available by upgrading affected packages to version 0.13.5.

CVE-2026-53471 at a Glance

CVE Identifier CVE-2026-53471
GHSA Identifier GHSA-2fqw-7c6r-2cq6
Severity CRITICAL
CVSS v3.1 Base Score 9.6
CWE Classification CWE-639: Authorization Bypass Through User-Controlled Key
Affected Product Github.com/kubev2v/migration planner
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 9.6

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2026-53471

To remediate this vulnerability, upgrade all affected Github.com/kubev2v/migration planner dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/kubev2v/migration-planner fixed: 0.13.5 
Upgrade github.com/kubev2v/migration-planner to 0.13.5
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/kubev2v/migration-planner

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-53471, inspect your project dependencies for Github.com/kubev2v/migration planner:

inspect dependencies for github.com/kubev2v/migration-planner

Analyze the terminal output to locate any version of Github.com/kubev2v/migration planner in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.13.5), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-639: Authorization Bypass Through User-Controlled Key, where the system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. In Github.com/kubev2v/migration planner, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2026-53471 Affected Github.com/kubev2v/migration planner Versions

1 component(s)
Fixed Versions:
0.13.5
Product / Package Ecosystem Affected Versions Fixed Version
github.com/kubev2v/migration-planner
golang/github.com/kubev2v/migration-planner
Go
< 0.13.5
0.13.5

References

NVD — CVE-2026-53471 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-53471
Github.com/kubev2v/migration planner Source Repository REPOSITORY
https://github.com/kubev2v/migration-planner/pull/1213
Security Fix Commit FIX COMMIT
https://github.com/kubev2v/migration-planner/commit/fd21a239216f5eeec635d16c72be9c033bd5d1aa
Github.com/kubev2v/migration planner Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2026-53471
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2487070
Github.com/kubev2v/migration planner Source Repository REPOSITORY
https://github.com/kubev2v/migration-planner

Frequently Asked Questions

What is CVE-2026-53471?
CVE-2026-53471 is a security vulnerability in Github.com/kubev2v/migration planner involving Openshift Migration Advisor agent-API fails to validate JWT source_id claim, allowing cross-tenant data manipulation under CWE-639: Authorization Bypass Through User-Controlled Key.
Which Github.com/kubev2v/migration planner versions are affected?
Affected versions include releases prior to 0.13.5 across affected packages: github.com/kubev2v/migration-planner.
What version fixes CVE-2026-53471?
Upgrading to 0.13.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/kubev2v/migration-planner affected?
Yes, github.com/kubev2v/migration-planner is affected in releases prior to 0.13.5. Upgrade your dependency to 0.13.5 or later.
What is the CVSS score of CVE-2026-53471?
CVE-2026-53471 has a CVSS v3.1 base score of 9.6 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.
What CWE is associated with CVE-2026-53471?
CVE-2026-53471 is classified under CWE-639: Authorization Bypass Through User-Controlled Key (The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.).
How can I check Go dependencies for CVE-2026-53471?
Run the dependency tree command: 'inspect dependencies for github.com/kubev2v/migration-planner'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-2fqw-7c6r-2cq6",
  "modified" : "2026-08-14T15:38:07Z",
  "published" : "2026-06-10T15:31:33Z",
  "aliases" : [ "CVE-2026-53471" ],
  "summary" : "Openshift Migration Advisor agent-API fails to validate JWT source_id claim, allowing cross-tenant data manipulation",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/kubev2v/migration-planner"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.13.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-53471"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/kubev2v/migration-planner/pull/1213"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/kubev2v/migration-planner/commit/fd21a239216f5eeec635d16c72be9c033bd5d1aa"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2026-53471"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2487070"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/kubev2v/migration-planner"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-639" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-14T15:38:07Z",
    "nvd_published_at" : "2026-06-10T15:16:41Z"
  }
}