Evidence used
- No CISA KEV confirmation is currently recorded.
- EPSS is 0.54% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2026
CVE-2026-32637High confidence
Velero vulnerable to file path traversal when extracting from backup's tarball
velero-io · velero
Official source article: GitHub GHSA-J2G6-362Q-6QC6 ↗. Check the applicable product and release in the original source.
5.9MediumCVSS 4.0
Patch only the product branches with a verified fix
Fix availability varies by productMedium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 7 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
R
Open reassessment dashboard →Operational reassessment
Published severity in operational context
Published severityMedium→Operational priority:Medium, unchanged from published severity.unchanged
Compensating controls
- Validate the affected product branch and deploy the verified fixed release.
- Restrict the affected network interface to trusted sources where business-safe.
- Monitor vendor guidance and exploitation sources for a material change.
Verification
- Confirm that the asset runs velero-io velero and falls inside the recorded affected range.
- Verify the installed build against the product-specific fixed version after deployment.
- Validate exposure, authentication requirements and compensating controls in the actual environment.
- Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Remediation availability differs by product scope
Verified remediation exists for at least one product or source, but 7 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
- Red Hat Product Security: 7 affected or under-investigation product states without a fixed product state in the same current advisory
Open-source package ranges2 source-attributed ranges
These OSV and GitHub advisory ranges apply only to the named package and ecosystem. A listed fixed version is not a universal product patch or proof that an update is installed.
| Ecosystem and package | Affected range | First fixed version | Evidence |
|---|---|---|---|
| Gogithub.com/vmware-tanzu/velero | SEMVER: introduced 0; fixed 1.18.1 | 1.18.1 | OSV record ↗aggregator derived · 10 Sep 2026 |
| gogithub.com/vmware-tanzu/velero | < 1.18.1 | 1.18.1 | GitHub advisory ↗upstream repository advisory · 20 Aug 2026 |
Direct vendor intelligence
1 currentAuthoritative vendor CSAF and VEX advisories
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
CVE-2026-32637 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitygithub.com/vmware-tanzu/velero: Velero: File path traversal allows overwriting sensitive files via malicious backup tarball.
The vendor explicitly identifies these products as affected by this CVE.
- rhmtc/openshift-migration-controller-rhel8 as a component of Migration Toolkit for Containers
- oadp/oadp-kubevirt-velero-plugin-rhel9 as a component of OpenShift API for Data Protection
- oadp/oadp-mustgather-rhel9 as a component of OpenShift API for Data Protection
- oadp/oadp-velero-restic-restore-helper-rhel9 as a component of OpenShift API for Data Protection
- oadp/oadp-velero-rhel9 as a component of OpenShift API for Data Protection
- rhacm2/cluster-backup-rhel9-operator as a component of Red Hat Advanced Cluster Management for Kubernetes 2
- odf4/odr-rhel9-operator as a component of Red Hat Openshift Data Foundation 4
- Summary
- A flaw was found in Velero, an open-source tool for managing Kubernetes backups. An attacker who compromises the backup object-storage backend can upload a specially crafted malicious backup file. During the restore process, this malicious file can exploit a path traversal vulnerability to overwrite sensitive files within the Velero pod's filesystem. This could lead to unauthorized modification of critical system files.
- Remediation
- Fix deferred
Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 7 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
Fix availability varies by product01
What, why and how
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
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.
Why
Attacker-controlled path data is not constrained to the intended directory before the application accesses a file.
How
An attacker operating through a network path may attempt exploitation when the stated preconditions are met. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
What
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.
Why
Attacker-controlled path data is not constrained to the intended directory before the application accesses a file.
How
An attacker operating through a network path may attempt exploitation when the stated preconditions are met. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation No confirmed evidence
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
Public PoC / exploit material None recorded
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.
- Likely attack path
- a network path → Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') → cause the confidentiality, integrity or availability impact described by the vendor
- Attack surface
- Network
- Privileges required
- None: unauthenticated exploitation is possible
- User interaction
- Active interaction required
- Attack complexity
- Low: no specialised conditions are recorded
- Security boundary
- Not a CVSS 4.0 base metric
- Weakness
?
CWE means Common Weakness Enumeration: a standard category for the underlying weakness. - CWE-22 ↗
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.
- CVSS vector
?
CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity. CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:NCommon Vulnerability Scoring System 4.0: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.ATPresentAttack requirements: A particular deployment or execution condition must be present.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIActiveUser interaction: A user must take a deliberate action for exploitation to succeed.VCNoneVulnerable-system confidentiality: No direct loss is represented by this metric.VIHighVulnerable-system integrity: A successful attack can cause a major loss.VAHighVulnerable-system availability: A successful attack can cause a major loss.SCNoneSubsequent-system confidentiality: No direct loss is represented by this metric.SINoneSubsequent-system integrity: No direct loss is represented by this metric.SANoneSubsequent-system availability: No direct loss is represented by this metric.- Post-exploitation / living off the land
- No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
03
Patch and workaround
Operational remediation based on structured source evidence.
- Status
?
Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change. - Fix availability varies by product
- Affected
- rhmtc/openshift-migration-controller-rhel8 as a component of Migration Toolkit for Containers
- oadp/oadp-kubevirt-velero-plugin-rhel9 as a component of OpenShift API for Data Protection
- oadp/oadp-mustgather-rhel9 as a component of OpenShift API for Data Protection
- oadp/oadp-velero-restic-restore-helper-rhel9 as a component of OpenShift API for Data Protection
- oadp/oadp-velero-rhel9 as a component of OpenShift API for Data Protection
- rhacm2/cluster-backup-rhel9-operator as a component of Red Hat Advanced Cluster Management for Kubernetes 2
- odf4/odr-rhel9-operator as a component of Red Hat Openshift Data Foundation 4
- Fixed
- 1.18.1.
- Action
- Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
- Workaround
- No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04
Evidence and provenance
Published 25 Aug 2026 · Last source change 28 Aug 2026, 22:38 UTC · CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source FIRST · tracked since 2026-08-26
?
The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.European sourceENISA EUVD · EUVD-2026-66117
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD not scheduled
Core structured fields are present and their contributing authorities are shown above.
Material change intelligence
View recent updates ↗What changed after publication
- Affected versionsThe structured affected or fixed version information changed.Red Hat Product Security ↗
- Before
- rhmtc/openshift-migration-controller-rhel8 as a component of Migration Toolkit for Containers; oadp/oadp-kubevirt-velero-plugin-rhel9 as a component of OpenShift API for Data Protection; oadp/oadp-mustgather-rhel9 as a component of OpenShift API for Data Protection; oadp/oadp-velero-restic-restore-helper-rhel9 as a component of OpenShift API for Data Protection; oadp/oadp-velero-rhel9 as a component of OpenShift API for Data Protection; rhacm2/cluster-backup-rhel9-operator as a component of Red Hat Advanced Cluster Management for Kubernetes 2; openshift4/lifecycle-agent-operator-bundle as a component of Red Hat OpenShift Container Platform 4; openshift4/lifecycle-agent-rhel9-operator as a component of Red Hat OpenShift Container Platform 4; odf4/odr-rhel9-operator as a component of Red Hat Openshift Data Foundation 4
- After
- rhmtc/openshift-migration-controller-rhel8 as a component of Migration Toolkit for Containers; oadp/oadp-kubevirt-velero-plugin-rhel9 as a component of OpenShift API for Data Protection; oadp/oadp-mustgather-rhel9 as a component of OpenShift API for Data Protection; oadp/oadp-velero-restic-restore-helper-rhel9 as a component of OpenShift API for Data Protection; oadp/oadp-velero-rhel9 as a component of OpenShift API for Data Protection; rhacm2/cluster-backup-rhel9-operator as a component of Red Hat Advanced Cluster Management for Kubernetes 2; odf4/odr-rhel9-operator as a component of Red Hat Openshift Data Foundation 4
- ENISA EUVD mappingEUVD-2026-66117 was added to the official ENISA EUVD mapping for this CVE.ENISA EUVD ↗
- Before
- not recorded
- After
- {"euvdId":"EUVD-2026-66117"}
- Catalogue recordCVE added to the BlackTree catalogue.CNA ↗
CVE published
Fixed release or patch reference recorded
Technical terms and abbreviations used in this report
- CVE
- Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
- CVSS
- Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
- EPSS
- Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
- CWE
- Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
- CNA
- CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
- CISA ADP
- Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
- NVD
- National Vulnerability Database: NIST's enrichment service for CVE records.
- CERT / CSIRT
- A computer security incident response team that publishes warnings or coordinates incident response.
- PoC
- Proof of concept: public material that demonstrates or helps reproduce exploitation.
- CSAF
- Common Security Advisory Framework: a machine-readable format for security advisories.
- LoTL
- Living off the land: abuse of legitimate tools or system functions during an attack.