Openshift Migration Advisor: Broken access control in migration-planner image-url endpoint exposes other users' OVA images and agent JWTs

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

9.6 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

EPSS

• CVE-2026-53470: 0.28% estimated exploitation activity in the next 30 days; percentile 20.61 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

A flaw was found in migration-planner. An authenticated attacker could exploit an improper access control vulnerability in the /api/v1/sources/{id}/image-url endpoint. This flaw allows the attacker to bypass an ownership check and obtain presigned S3 URLs for Open Virtual Appliance (OVA) images belonging to other users. Consequently, the attacker can download OVA images containing sensitive information, such as long-lived agent JSON Web Tokens (JWTs) and source configurations, potentially leading to unauthorized access and modification of the victim's source.

Published by the source

18 Aug 2026, 14:32 UTC

Last modified by the source

18 Aug 2026, 15:00 UTC

Source last checked

26 Oct 2026, 15:28 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-v5m8-5455-qw2x

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GO-2026-6229

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# Patch Next advisory brief: CVE-2026-53470

Advisory: Openshift Migration Advisor: Broken access control in migration-planner image-url endpoint exposes other users' OVA images and agent JWTs
IDs: CVE-2026-53470, GHSA-v5m8-5455-qw2x
Record: https://patchnext.com/advisories/cve-2026-53470 (revision 2, source checked 26 Oct 2026, 15:28 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.6)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: github.com/kubev2v/migration-planner 0.13.5. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/kubev2v/migration-planner: affected < 0.13.5; fixed in 0.13.5

## Suggested inspection (read-only)
- Go github.com/kubev2v/migration-planner: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/kubev2v/migration-planner.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GO-2026-6229 (OSV record GO-2026-6229 lists affected ranges: Go github.com/kubev2v/migration-planner >=0 <0.13.5 (fixed))
- Verified: https://github.com/advisories/GHSA-v5m8-5455-qw2x (GitHub-reviewed advisory GHSA-v5m8-5455-qw2x lists affected ranges: Go github.com/kubev2v/migration-planner >=0 <0.13.5)

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