Security Digest · Vulnerability record
CVE-2026-53476: Assisted Migration Agent: Path traversal in gzipped tarball handling enables arbitrary file write and remote code execution
A flaw was found in assisted-migration-agent.
CVSS 9.6 Critical EPSS 0.4% · p36
Should you act?
Critical, preconditions apply
Severe if exploited, but exploitation needs conditions that may not apply to you. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.4%, percentile 36: FIRST’s model estimates a 0.4% chance of exploitation activity in the next 30 days, higher than 36% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Only applies if your dependency tree includes
github.com/kubev2v/assisted-migration-agent(Go) < 0.16.0, fixed in 0.16.0. Check your lockfile, including transitive dependencies.
What it is
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.
From the GitHub advisory
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 type: CWE-59, CWE-22.
Product: github.com/kubev2v/assisted-migration-agent (Go) · Assigned by: redhat · Published: 2026-06-10
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| Go | github.com/kubev2v/assisted-migration-agent | < 0.16.0 | 0.16.0 |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| assisted-migration-agent | < bcae0438ad8386321a300413d71c982a11b7b5b7 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhat | 3.1 | 9.6 Critical | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| GitHub | 3.1 | 9.6 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
- Attack vector: adjacent network only
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: none
- Scope: changed (can affect other components)
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none, automatable no, technical impact total.
- FIRST EPSS (model of 2026-10-21): 0.43% probability of exploitation activity in the next 30 days; percentile 36.
Timeline
- — CVE record last updated
- — CVE record published by redhat
- — GitHub-reviewed advisory GHSA-7j4w-x8x8-5mvg published (critical)
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- GitHub Advisory GHSA-7j4w-x8x8-5mvg github.com
- CVE.org record CVE-2026-53476 cve.org
- NVD entry CVE-2026-53476 nvd.nist.gov
Other references from the CVE record and advisory
- access.redhat.com access.redhat.com
- RHBZ#2487233 bugzilla.redhat.com
- github.com github.com
- github.com github.com