# CVE-2026-53476: Assisted-migration-agent: vddk tarball chained-symlink arbitrary file write

> An unauthenticated LAN attacker can exploit path traversal in the assisted-migration-agent to write arbitrary files, potentially leading to unauthorized code execution.

- **Severity:** Critical 9.6 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 10 Jun 2026
- **Updated:** 10 Jun 2026
- **Also known as:** GHSA-7j4w-x8x8-5mvg, GO-2026-6231

## What is CVE-2026-53476?

CVE-2026-53476 is a critical path traversal vulnerability in kubev2v:assisted_migration_agent, published on 10 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

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.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory), CWE-59 (Improper Link Resolution Before File Access)

## Which versions are affected by CVE-2026-53476?

3 open source packages ship an affected version, including github.com/kubev2v/assisted-migration-agent. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `github.com/kubev2v/assisted-migration-agent` | Go | All versions | 0.16.0 |
| `github.com/kubev2v/assisted-migration-agent` | Go | All versions | 0.16.0 |
| `github.com/kubev2v/assisted-migration-agent` | Go | All versions | 0.16.0 |

Products: Kubev2v Assisted Migration Agent.

## How do I fix CVE-2026-53476?

Upgrade github.com/kubev2v/assisted-migration-agent to 0.16.0 or later.

## Is CVE-2026-53476 being exploited?

There is no known exploitation of CVE-2026-53476 in the wild and no public exploit code.

## Other vulnerabilities in kubev2v:assisted_migration_agent

- [CVE-2026-53475](https://insights.sbomify.com/CVE-2026-53475/): Assisted-migration-agent: tls verification disabled on all vcenter connections (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-53476 and fix it if it is affected.

What it is: CVE-2026-53476 is a critical path traversal vulnerability in kubev2v:assisted_migration_agent, published on 10 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-53476 in the wild and no public exploit code.

Affected packages and fixed versions:
- github.com/kubev2v/assisted-migration-agent (Go): affected all versions; fixed in 0.16.0
- github.com/kubev2v/assisted-migration-agent (Go): affected all versions; fixed in 0.16.0
- github.com/kubev2v/assisted-migration-agent (Go): affected all versions; fixed in 0.16.0

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-53476/ (Markdown: https://insights.sbomify.com/CVE-2026-53476/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-53476
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-53476
- OSV: https://osv.dev/vulnerability/CVE-2026-53476

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-53476/
Summaries are generated and may contain mistakes; the official description above is the record.