7.7

CVE-2026-9804: Kubevirt: kubevirt: vmexport directory symlink escape enables exporter pod file read

Awaiting analysis
AliasesCGA-cx9c-85rh-3452CGA-xxqx-jr86-cqr8GHSA-mpmf-3w4r-qfpf
Published 28-05-2026Last modified 10-09-2026

Vulnerability summary

CVE-2026-9804 is a high (CVSS 7.7) vulnerability in docker-machine-driver-harvester. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 43.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.7, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.7/10
010
High · v3.1 (CVE.org)
EPSS score
0.52%
0%100%
Low · -0.20 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 7
OPENSUSE-SU-2026:11015-1OPENSUSE-SU-2026:11057-1OPENSUSE-SU-2026:11091-1OPENSUSE-SU-2026:21483-1SUSE-SU-2026:2783-1SUSE-SU-2026:2804-1

Timeline

  1. 28-05-2026
    PublishedVulnerability first disclosed.
  2. 10-09-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.52%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

Decrease -0.20 pp

From 0.72% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard46 products
  • docker-machine-driver-harvester< 1.1.0-r1
  • harvesterAll versions (No fix recorded)
  • harvester-fipsAll versions (No fix recorded)
  • harvester-fips-upgrade-helperAll versions (No fix recorded)
  • harvester-fips-webhookAll versions (No fix recorded)
Kubevirt.io1 product
  • kubevirt≤ 1.9.0-beta.0 | All versions (No fix recorded)
Wolfi1 product
  • docker-machine-driver-harvester< 1.1.0-r1

3 vendors · 48 products

References

12 links
Show all 12 references