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CVE-2026-53470 Red Hat CVE debrief

CVE-2026-53470: 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.

Vendor
Red Hat
Product
migration-planner
CVSS
CRITICAL 9.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-06-17
Advisory published
2026-06-10
Advisory updated
2026-06-17

Who should care

Users of migration-planner, especially those with sensitive information in OVA images.

Technical summary

The vulnerability has a CVSS score of 9.6 and is classified as CRITICAL. It exists in the `/api/v1/sources/{id}/image-url` endpoint, where an authenticated attacker can bypass ownership checks to obtain presigned S3 URLs for OVA images belonging to other users.

Defensive priority

High

Recommended defensive actions

  • Apply patches or updates provided by the vendor to fix the improper access control vulnerability.
  • Restrict access to the `/api/v1/sources/{id}/image-url` endpoint to only authorized users.
  • Monitor OVA image downloads and access to sensitive information.
  • Consider implementing additional security measures, such as encryption and access controls, to protect sensitive information in OVA images.

Evidence notes

The CVE record was published on 2026-06-10T15:16:41.567Z and modified on 2026-06-10T19:24:04.320Z. The vulnerability was reported by [email protected].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-53470 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-53470

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-53470 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-53470

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.