Common Weakness Enumeration
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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.
CVE-2026-9804 (GCVE-0-2026-9804)
Vulnerability from cvelistv5 – Published: 2026-05-28 08:15 – Updated: 2026-06-30 12:10
VLAI
EPSS
VEX
Title
Kubevirt: kubevirt: vmexport directory symlink escape enables exporter pod file read
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.
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:27903 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:27913 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:27914 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:27983 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:28002 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-9804 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2482487 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
11 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Container Native Virtualization 4.17 |
Unaffected:
1781757410 , < *
(rpm)
cpe:/a:redhat:container_native_virtualization:4.17::el9 |
|
| Red Hat | Red Hat Container Native Virtualization 4.18 |
Unaffected:
1781928221 , < *
(rpm)
cpe:/a:redhat:container_native_virtualization:4.18::el9 |
|
| Red Hat | Red Hat Container Native Virtualization 4.19 |
Unaffected:
1781590993 , < *
(rpm)
cpe:/a:redhat:container_native_virtualization:4.19::el9 |
|
| Red Hat | Red Hat Container Native Virtualization 4.20 |
Unaffected:
1781838712 , < *
(rpm)
cpe:/a:redhat:container_native_virtualization:4.20::el9 |
|
| Red Hat | Red Hat Container Native Virtualization 4.21 |
Unaffected:
1782012918 , < *
(rpm)
cpe:/a:redhat:container_native_virtualization:4.21::el9 |
|
| Red Hat | Red Hat OpenShift Virtualization 4 |
cpe:/a:redhat:container_native_virtualization:4 |
|
| Red Hat | Red Hat Container Native Virtualization 4.17 |
cpe:/a:redhat:container_native_virtualization:4.17::el9 |
|
| Red Hat | Red Hat Container Native Virtualization 4.18 |
cpe:/a:redhat:container_native_virtualization:4.18::el9 |
|
| Red Hat | Red Hat Container Native Virtualization 4.19 |
cpe:/a:redhat:container_native_virtualization:4.19::el9 |
|
| Red Hat | Red Hat Container Native Virtualization 4.20 |
cpe:/a:redhat:container_native_virtualization:4.20::el9 |
|
| Red Hat | Red Hat Container Native Virtualization 4.21 |
cpe:/a:redhat:container_native_virtualization:4.21::el9 |
Date Public
2026-05-28 06:00
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Mitigation ID: MIT-48.1
Phase: Architecture and Design
Strategy: Separation of Privilege
Description:
- Follow the principle of least privilege when assigning access rights to entities in a software system.
- Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
CAPEC-132: Symlink Attack
An adversary positions a symbolic link in such a manner that the targeted user or application accesses the link's endpoint, assuming that it is accessing a file with the link's name.
CAPEC-17: Using Malicious Files
An attack of this type exploits a system's configuration that allows an adversary to either directly access an executable file, for example through shell access; or in a possible worst case allows an adversary to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
CAPEC-35: Leverage Executable Code in Non-Executable Files
An attack of this type exploits a system's trust in configuration and resource files. When the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high.
CAPEC-76: Manipulating Web Input to File System Calls
An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.