Vulnerabilities in pkg:golang/github.com/vmware-tanzu/velero

PACKAGE
Advisory Identifier: GHSA-j2g6-362q-6qc6
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Advisory Summary

CVE-2026-32637 is a MODERATE path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Github.com/vmware tanzu/velero libraries in the Go ecosystem. The issue involves velero vulnerable to file path traversal when extracting from backup's tarball. Remediation is available by upgrading affected packages to version 1.18.1.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:golang/github.com/vmware-tanzu/velero

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:golang/github.com/vmware-tanzu/velero. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-j2g6-362q-6qc6 CVE-2026-32637 MODERATE Velero vulnerable to file path traversal when extracting from backup's tarball

CVE-2026-32637 at a Glance

CVE Identifier CVE-2026-32637
GHSA Identifier GHSA-j2g6-362q-6qc6
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Github.com/vmware tanzu/velero
Package Ecosystem Go
Published Date
Last Updated

How to Fix CVE-2026-32637

To remediate this vulnerability, upgrade all affected Github.com/vmware tanzu/velero dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/vmware-tanzu/velero fixed: 1.18.1 
Upgrade github.com/vmware-tanzu/velero to 1.18.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/vmware-tanzu/velero

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-32637, inspect your project dependencies for Github.com/vmware tanzu/velero:

inspect dependencies for github.com/vmware-tanzu/velero

Analyze the terminal output to locate any version of Github.com/vmware tanzu/velero in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.18.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Github.com/vmware tanzu/velero, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact _What kind of vulnerability is it? Who is impacted?_ If the attacker compromises the backup's object storage backend and uploads a malicious backup tarball including file names like the following: * ../../../tmp/escape_1 -> file created at /tmp/escape_1 * ../../../../../../../../tmp/escape_2 -> file created at /tmp/escape_2 * ../../../tmp/cron_poc -> would be /etc/cron.d/backdoor in real attack * ../../../tmp/ssh_poc -> would be ~/.ssh/authorized_keys * ../../../tmp/kubeconfig_poc -> would be ~/.kube/config It's possible that extracting files from the tarball during restore can overwrite sensitive files in the Velero pod filesystem. ### Patches _Has the problem been patched? What versions should users upgrade to?_ By far, there is no patch yet. We are working on the main branch, then cherry-pick to the release-1.18 for v1.18.1 patch. ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ There is no workaround, but the good news is that keeping your OSS safe will prevent the vulnerability.

CVE-2026-32637 Affected Github.com/vmware tanzu/velero Versions

1 component(s)
Fixed Versions:
1.18.1
Product / Package Ecosystem Affected Versions Fixed Version
github.com/vmware-tanzu/velero
golang/github.com/vmware-tanzu/velero
Go
< 1.18.1
1.18.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/velero-io/velero/security/advisories/GHSA-j2g6-362q-6qc6
Github.com/vmware tanzu/velero Source Repository REPOSITORY
https://github.com/securego/gosec/issues/324
Github.com/vmware tanzu/velero Source Repository REPOSITORY
https://github.com/velero-io/velero

Frequently Asked Questions

What is CVE-2026-32637?
CVE-2026-32637 is a security vulnerability in Github.com/vmware tanzu/velero involving Velero vulnerable to file path traversal when extracting from backup's tarball under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Github.com/vmware tanzu/velero versions are affected?
Affected versions include releases prior to 1.18.1 across affected packages: github.com/vmware-tanzu/velero.
What version fixes CVE-2026-32637?
Upgrading to 1.18.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/vmware-tanzu/velero affected?
Yes, github.com/vmware-tanzu/velero is affected in releases prior to 1.18.1. Upgrade your dependency to 1.18.1 or later.
What CWE is associated with CVE-2026-32637?
CVE-2026-32637 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Go dependencies for CVE-2026-32637?
Run the dependency tree command: 'inspect dependencies for github.com/vmware-tanzu/velero'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-j2g6-362q-6qc6",
  "modified" : "2026-08-20T17:26:08Z",
  "published" : "2026-08-20T17:26:07Z",
  "aliases" : [ "CVE-2026-32637" ],
  "summary" : "Velero vulnerable to file path traversal when extracting from backup's tarball",
  "details" : "### Impact\n_What kind of vulnerability is it? Who is impacted?_\nIf the attacker compromises the backup's object storage backend and uploads a malicious backup tarball including file names like the following:\n* ../../../tmp/escape_1              -> file created at /tmp/escape_1\n* ../../../../../../../../tmp/escape_2 -> file created at /tmp/escape_2\n* ../../../tmp/cron_poc              -> would be /etc/cron.d/backdoor in real attack\n* ../../../tmp/ssh_poc               -> would be ~/.ssh/authorized_keys\n* ../../../tmp/kubeconfig_poc        -> would be ~/.kube/config\n\nIt's possible that extracting files from the tarball during restore can overwrite sensitive files in the Velero pod filesystem. \n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\nBy far, there is no patch yet.\nWe are working on the main branch, then cherry-pick to the release-1.18 for v1.18.1 patch.\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nThere is no workaround, but the good news is that keeping your OSS safe will prevent the vulnerability.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/vmware-tanzu/velero"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.18.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/velero-io/velero/security/advisories/GHSA-j2g6-362q-6qc6"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/securego/gosec/issues/324"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/velero-io/velero"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-20T17:26:07Z",
    "nvd_published_at" : null
  }
}