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

Quick assessment

Affected
velero-io velero
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Velero是Velero社区的一款云原生备份恢复工具。 Velero 1.18.1之前版本存在路径遍历漏洞，该漏洞源于备份恢复过程中对路径验证不当，允许攻击者上传包含父目录路径的恶意备份tarball，导致路径遍历并覆盖Velero pod文件系统中的敏感文件。

CVSS 5.9 · Medium EPSS 0.54% · P44

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
velero-io velero < 1.18.1 affected
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I. Basic Information for CVE-2026-32637

Vulnerability Information
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Vulnerability Title
Velero vulnerable to file path traversal when extracting from backup's tarball
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Velero 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Velero是Velero社区的一款云原生备份恢复工具。 Velero 1.18.1之前版本存在路径遍历漏洞，该漏洞源于备份恢复过程中对路径验证不当，允许攻击者上传包含父目录路径的恶意备份tarball，导致路径遍历并覆盖Velero pod文件系统中的敏感文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
velero-io velero < 1.18.1 -

II. Public POCs for CVE-2026-32637

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III. Intelligence Information for CVE-2026-32637

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Patches & Fixes for CVE-2026-32637 (2)

Vendor Advisories for CVE-2026-32637 (1)

Mailing List Discussions for CVE-2026-32637 (1)

IV. Related Vulnerabilities

Same product: velero
Same weakness: CWE-22

V. Comments for CVE-2026-32637

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