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CVE-2026-53471 critical CVSS 9.6

Vulnerability in github.com/kubev2v/migration-planner (CVE-2026-53471)

Summary

Vulnerability in github.com/kubev2v/migration-planner (CVE-2026-53471). Confidential information can be exposed externally. Mitigation: upgrade to 0.13.5 or later.

Original description

The description as published by the source.

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.

Source: NIST National Vulnerability Database NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-53471 has been found in github.com/kubev2v/migration-planner.
Confidential information can be exposed externally. CVSS score: 9.6/10.
What to do: upgrade github.com/kubev2v/migration-planner to 0.13.5 or later.
If unsure, ask your IT team or search "github.com/kubev2v/migration-planner CVE-2026-53471" on the vendor's site.

CVE-2026-53471 (github.com/kubev2v/migration-planner) — CWE-639 / CVSS v3 9.6
Attack vector: remote (network-reachable) / no user interaction
Patched: 0.13.5 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (CWE-639) exists in github.com/kubev2v/migration-planner.

📍 Affected scope

Check the vendor advisory for the affected versions of github.com/kubev2v/migration-planner.

🔥 Severity

Severity: Critical (CVSS 9.6/10). Confidential information can be exposed externally.

🔧 How to fix

Update to 0.13.5.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'github.com/kubev2v/migration-planner' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'github.com/kubev2v/migration-planner' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で github.com/kubev2v/migration-planner を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply patch patch 
    Upgrade github.com/kubev2v/migration-planner to 0.13.5

    ステージング環境で 0.13.5 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  3. 3
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

go github.com/kubev2v/migration-planner
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.13.5"}]}]

References

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