CVE-2026-53471: kebev2v migration_assessment
Vulnerability summary
CVE-2026-53471 is a critical (CVSS 9.6) vulnerability in kebev2v migration_assessment. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 42.8% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 10-06-2026PublishedVulnerability first disclosed.
- 10-06-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · GoEcosystem advisory · calculated9.6CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
- NVDNIST7.7HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:NDiffers
EPSS trend
Probability
0.51%
Chance of exploitation in the next 30 days
Percentile
43%
Versus all other CVEs
30-day change
+0.23 pp
From 0.29% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Github.com/kubev2v1 product
- migration-planner< 0.13.5
Kebev2v1 product
- migration_assessment< 0.13.5
2 vendors · 2 products
