Red Hat · Red Hat Container Native Virtualization 4.17
7.7HighCVSS 3.1
Recommended action
Within 7 days
High technical severity; prioritise exposed affected systems while verifying vendor guidance.
Patch available
Direct vendor intelligence
Authoritative 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.
The vendor explicitly identifies these products as affected by this CVE.
container-native-virtualization/virt-exportserver as a component of Red Hat OpenShift Virtualization 4
Summary
A flaw was found in KubeVirt's virt-exportserver component. An attacker with specific namespace-level access can exploit a path traversal vulnerability in the VMExport directory endpoint. By placing a symbolic link (symlink) within an exported filesystem Persistent Volume Claim (PVC) that points outside its designated mount root, the attacker can read arbitrary files from the exporter pod's filesystem. This leads to information disclosure, potentially exposing sensitive data.
Remediation
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
Optional official sources
National CERT insights ?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.
Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.
Official European source
ENISA European Vulnerability Database
Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.
1 current
ENISA EUVD identifier
EUVD-2026-32748
No EUVD known-exploited evidence
A flaw was found in KubeVirt's virt-exportserver component. An attacker with specific namespace-level access can exploit a path traversal vulnerability in the VMExport directory endpoint. By placing a symbolic link (symlink) within an exported filesystem Persistent Volume Claim (PVC) that points outside its designated mount root, the attacker can read arbitrary files from the exporter pod's filesystem. This leads to information disclosure, potentially exposing sensitive data.
EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
7.7 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days
High technical severity; prioritise exposed affected systems while verifying vendor guidance.
Patch available
01
What, why and how
A flaw was found in KubeVirt's virt-exportserver component. An attacker with specific namespace-level access can exploit a path traversal vulnerability in the VMExport directory endpoint. By placing a symbolic link (symlink) within an exported filesystem Persistent Volume Claim (PVC) that points outside its designated mount root, the attacker can read arbitrary files from the exporter pod's filesystem. This leads to information disclosure, potentially exposing sensitive data.
What
A flaw was found in KubeVirt's virt-exportserver component. An attacker with specific namespace-level access can exploit a path traversal vulnerability in the VMExport directory endpoint. By placing a symbolic link (symlink) within an exported filesystem Persistent Volume Claim (PVC) that points outside its designated mount root, the attacker can read arbitrary files from the exporter pod's filesystem. This leads to information disclosure, potentially exposing sensitive data.
Why
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
How
An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may obtain information outside the intended access boundary.
What
A flaw was found in KubeVirt's virt-exportserver component. An attacker with specific namespace-level access can exploit a path traversal vulnerability in the VMExport directory endpoint. By placing a symbolic link (symlink) within an exported filesystem Persistent Volume Claim (PVC) that points outside its designated mount root, the attacker can read arbitrary files from the exporter pod's filesystem. This leads to information disclosure, potentially exposing sensitive data.
Why
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
How
An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may obtain information outside the intended access boundary.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No confirmed evidence
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 ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.None recorded
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 Link Resolution Before File Access ('Link Following') → obtain information outside the intended access boundary
Attack surface
Network
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Changed: exploitation can affect a different security authority
Weakness ?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-59: Improper Link Resolution Before File Access ('Link Following'). The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
CVSS vector ?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Common Vulnerability Scoring System 3.1: 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.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SChangedScope: The attack can affect a component governed by a different security authority.CHighConfidentiality impact: A successful attack can cause a major loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: 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.
NetworkCWE-59
A
Official authority intelligence
Only matched European and national findings are included. Language selectors and unavailable sources are omitted.
ENISA EUVD · EUVD-2026-32748Official EUVD mapping
A flaw was found in KubeVirt's virt-exportserver component. An attacker with specific namespace-level access can exploit a path traversal vulnerability in the VMExport directory endpoint. By placing a symbolic link (symlink) within an exported filesystem Persistent Volume Claim (PVC) that points outside its designated mount root, the attacker can read arbitrary files from the exporter pod's filesystem. This leads to information disclosure, potentially exposing sensitive data.
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.
Patch available
Affected
container-native-virtualization/virt-exportserver as a component of Red Hat OpenShift Virtualization 4
Fixed
registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:465fb0dd4e80a07c298eb724dd6a907532c673bed9404cec734cff71cce2100f_amd64 as a component of Red Hat Container Native Virtualization 4.17; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:96be5fd7bafba08700136b008bf3a5d9b42a5a2c0a4a858ce118bfa23a42e110_arm64 as a component of Red Hat Container Native Virtualization 4.17; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:56b278ab96c4ab767ef06d29e0bf3e8906d6b189da41310c84e95fbea25d2691_arm64 as a component of Red Hat Container Native Virtualization 4.18; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:a4f34fded28353093eabc80eae9ef84b031c66c2b1dd6fad9470e501c456c63c_s390x as a component of Red Hat Container Native Virtualization 4.18; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:b0c8858b89228f088735b184861ef71e7c01b55fc155ebee925d62db422c51ac_amd64 as a component of Red Hat Container Native Virtualization 4.18; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:0721f8a624942860779f18691b6d0fbb028460c6fbff113d28e59f6d31b2270a_s390x as a component of Red Hat Container Native Virtualization 4.19; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:38749d57d482311927812de109b1dffde2cccac836fb783e15a8899ec589a94d_arm64 as a component of Red Hat Container Native Virtualization 4.19; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:4f579d5f675cbbcac309dd3d2dbf484628fa4cc0f007695a85c1c72e224c840c_amd64 as a component of Red Hat Container Native Virtualization 4.19; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:1e1235b7da09a9eb5e4518381f0650b63ea57bf5e8798f7e2d34b9f051c9ec49_arm64 as a component of Red Hat Container Native Virtualization 4.20; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:3bc73340bb9eacaedae8de3a3254c8c970ffc33eac24605cbbbe47e17d0938eb_amd64 as a component of Red Hat Container Native Virtualization 4.20; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:546fe97b880b65523a0ed0b522746c3bf3459ebf5dc2840425182eda55e78a4b_s390x as a component of Red Hat Container Native Virtualization 4.20; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:0f139421f6a28079640ec2166e9f47bc8e800d5ed0a4f74733ee92910d41cde2_s390x as a component of Red Hat Container Native Virtualization 4.21; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:42c795be0f550e3e558aedbeb48587db9dc2d703704b26f1f640affad1ded53e_arm64 as a component of Red Hat Container Native Virtualization 4.21; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:977d564e0824b3759f07941443b552acc6bc09e932e31ad6e80ab7d92213853c_amd64 as a component of Red Hat Container Native Virtualization 4.21
Action
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
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 28 May 2026 · Last source change 24 Aug 2026, 12:06 UTC · CWE-59 · Improper Link Resolution Before File Access ('Link Following')
CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source ?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-32748
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD awaiting enrichment
Core structured fields are present and their contributing authorities are shown above.
Affected versionsThe structured affected or fixed version information changed.
Before
container-native-virtualization/virt-exportserver as a component of Red Hat OpenShift Virtualization 4 · Fixed: registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:465fb0dd4e80a07c298eb724dd6a907532c673bed9404cec734cff71cce2100f_amd64 as a component of Red Hat Container Native Virtualization 4.17; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:96be5fd7bafba08700136b008bf3a5d9b42a5a2c0a4a858ce118bfa23a42e110_arm64 as a component of Red Hat Container Native Virtualization 4.17; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:56b278ab96c4ab767ef06d29e0bf3e8906d6b189da41310c84e95fbea25d2691_arm64 as a component of Red Hat Container Native Virtualization 4.18; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:a4f34fded28353093eabc80eae9ef84b031c66c2b1dd6fad9470e501c456c63c_s390x as a component of Red Hat Container Native Virtualization 4.18; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:b0c8858b89228f088735b184861ef71e7c01b55fc155ebee925d62db422c51ac_amd64 as a component of Red Hat Container Native Virtualization 4.18; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:0721f8a624942860779f18691b6d0fbb028460c6fbff113d28e59f6d31b2270a_s390x as a component of Red Hat Container Native Virtualization 4.19; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:38749d57d482311927812de109b1dffde2cccac836fb783e15a8899ec589a94d_arm64 as a component of Red Hat Container Native Virtualization 4.19; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:4f579d5f675cbbcac309dd3d2dbf484628fa4cc0f007695a85c1c72e224c840c_amd64 as a component of Red Hat Container Native Virtualization 4.19; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:0f139421f6a28079640ec2166e9f47bc8e800d5ed0a4f74733ee92910d41cde2_s390x as a component of Red Hat Container Native Virtualization 4.21; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:42c795be0f550e3e558aedbeb48587db9dc2d703704b26f1f640affad1ded53e_arm64 as a component of Red Hat Container Native Virtualization 4.21; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:977d564e0824b3759f07941443b552acc6bc09e932e31ad6e80ab7d92213853c_amd64 as a component of Red Hat Container Native Virtualization 4.21; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:1e1235b7da09a9eb5e4518381f0650b63ea57bf5e8798f7e2d34b9f051c9ec49_arm64 as a component of Red Hat Container Native Virtualization 4.2; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:3bc73340bb9eacaedae8de3a3254c8c970ffc33eac24605cbbbe47e17d0938eb_amd64 as a component of Red Hat Container Native Virtualization 4.2; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:546fe97b880b65523a0ed0b522746c3bf3459ebf5dc2840425182eda55e78a4b_s390x as a component of Red Hat Container Native Virtualization 4.2
After
container-native-virtualization/virt-exportserver as a component of Red Hat OpenShift Virtualization 4 · Fixed: registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:465fb0dd4e80a07c298eb724dd6a907532c673bed9404cec734cff71cce2100f_amd64 as a component of Red Hat Container Native Virtualization 4.17; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:96be5fd7bafba08700136b008bf3a5d9b42a5a2c0a4a858ce118bfa23a42e110_arm64 as a component of Red Hat Container Native Virtualization 4.17; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:56b278ab96c4ab767ef06d29e0bf3e8906d6b189da41310c84e95fbea25d2691_arm64 as a component of Red Hat Container Native Virtualization 4.18; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:a4f34fded28353093eabc80eae9ef84b031c66c2b1dd6fad9470e501c456c63c_s390x as a component of Red Hat Container Native Virtualization 4.18; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:b0c8858b89228f088735b184861ef71e7c01b55fc155ebee925d62db422c51ac_amd64 as a component of Red Hat Container Native Virtualization 4.18; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:0721f8a624942860779f18691b6d0fbb028460c6fbff113d28e59f6d31b2270a_s390x as a component of Red Hat Container Native Virtualization 4.19; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:38749d57d482311927812de109b1dffde2cccac836fb783e15a8899ec589a94d_arm64 as a component of Red Hat Container Native Virtualization 4.19; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:4f579d5f675cbbcac309dd3d2dbf484628fa4cc0f007695a85c1c72e224c840c_amd64 as a component of Red Hat Container Native Virtualization 4.19; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:1e1235b7da09a9eb5e4518381f0650b63ea57bf5e8798f7e2d34b9f051c9ec49_arm64 as a component of Red Hat Container Native Virtualization 4.20; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:3bc73340bb9eacaedae8de3a3254c8c970ffc33eac24605cbbbe47e17d0938eb_amd64 as a component of Red Hat Container Native Virtualization 4.20; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:546fe97b880b65523a0ed0b522746c3bf3459ebf5dc2840425182eda55e78a4b_s390x as a component of Red Hat Container Native Virtualization 4.20; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:0f139421f6a28079640ec2166e9f47bc8e800d5ed0a4f74733ee92910d41cde2_s390x as a component of Red Hat Container Native Virtualization 4.21; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:42c795be0f550e3e558aedbeb48587db9dc2d703704b26f1f640affad1ded53e_arm64 as a component of Red Hat Container Native Virtualization 4.21; registry.redhat.io/container-native-virtualization/virt-exportserver-rhel9@sha256:977d564e0824b3759f07941443b552acc6bc09e932e31ad6e80ab7d92213853c_amd64 as a component of Red Hat Container Native Virtualization 4.21
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.
