GHSA-j2g6-362q-6qc6Published

Velero vulnerable to file path traversal when extracting from backup's tarball

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cve-program · CVE-2026-32637

Published

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.

Source published: 25 Aug 2026 21:15:31 UTC
Source modified: 28 Aug 2026 22:38:21 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

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CVSS 4.0 · 5.9 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

euvd · EUVD-2026-66117

Published

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datePublished: Aug 25, 2026, 9:15:31 PM

dateUpdated: Aug 28, 2026, 10:38:21 PM

Source published: Aug 25, 2026, 9:15:31 PM (timezone not stated)
Source modified: Aug 28, 2026, 10:38:21 PM (timezone not stated)
Saved here: 13 Nov 2026 21:11:41 UTC
Source terms: ENISA EUVD · source terms and attribution apply

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EUVD CVSS 4.0 · 5.9 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

nvd · CVE-2026-32637

Published

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Source analysis status: Deferred

Weakness classifications: CWE-22

Original publisher date fields

published: 2026-08-25T22:17:02.380

lastModified: 2026-09-09T21:09:13.080

Source published: 25 Aug 2026 22:17:02 UTC
Source modified: 9 Sep 2026 21:09:13 UTC
Saved here: 25 Oct 2026 07:19:26 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

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CVSS 4.0 · [email protected] · Secondary · 5.9 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

osv · GHSA-j2g6-362q-6qc6

Published

### 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.

Source published: 20 Aug 2026 17:26:07 UTC
Source modified: 10 Sep 2026 03:50:53 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

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CVSS_V4 · 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

Publisher rating · MODERATE

osv · GO-2026-6259

Published

Velero vulnerable to file path traversal when extracting from backup's tarball in github.com/vmware-tanzu/velero

Source published: 25 Aug 2026 19:43:10 UTC
Source modified: 26 Aug 2026 01:20:20 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

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