CVE-2026-32637

medium

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.

References

https://github.com/velero-io/velero/security/advisories/GHSA-j2g6-362q-6qc6

https://github.com/velero-io/velero/commit/c7fa4bfe3571667e9731f3f504da3c6be709a24c

https://github.com/velero-io/velero/commit/3f8e3588496391979915ace065f732a9013c1cf0

https://github.com/securego/gosec/issues/324

Details

Source: Mitre, NVD

Published: 2026-08-25

Updated: 2026-09-09

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Severity: High

CVSS v4

Base Score: 5.9

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

Severity: Medium

EPSS

EPSS: 0.00514