Path Traversal in Kubev2v Assisted Migration Agent
CVE-2026-53476
A flaw was found in assisted-migration-agent. An unauthenticated attacker, located on the same local area network (LAN), can exploit a path traversal vulnerability. By crafting a specially designed gzipped tarball, the attacker can bypass security checks and write arbitrary files to the system. This could ultimately lead to the execution of unauthorized code on the appliance.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (34.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-53476 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory, Issue Tracking)
- github.com/kubev2v/assisted-migration-agent/pull/256 (Patch)
Frequently asked questions
- What is CVE-2026-53476?
- CVE-2026-53476 is a critical-severity vulnerability in Kubev2v Assisted Migration Agent, classified under Improper Link Resolution Before File Access. CVSS score: 9.6/10. Published 2026-06-10.
- How severe is CVE-2026-53476?
- Critical severity. CVSS v3 base score is 9.6 out of 10.