CVE-2026-9804

HIGHPre-NVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

Score 7.7 from GitHub Security Advisory (severity: HIGH) published 2026-05-28. a secondary CVSS source baseline 7.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.7Exploit: None knownExposed: 0

A fix is available — apply it.

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 v3
7.7
EG Score
7.7(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity77% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

May 28, 2026

Last Modified

September 10, 2026

Advisory Details (2)

Auto-updated Jun 5, 2026
Patch available. Sources: redhat.
redhat

2482487 – (CVE-2026-9804) CVE-2026-9804 kubevirt: kubevirt: VMExport directory symlink escape enables exporter pod file read

https://bugzilla.redhat.com/show_bug.cgi?id=2482487
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-9804

Vendor Advisories for CVE-2026-9804(7)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatcontainer-native-virtualization/virt-exportserver-rhel9:17817574102026-06-22redhat
redhatcontainer-native-virtualization/virt-exportserver-rhel9:17819282212026-06-22redhat
redhatcontainer-native-virtualization/virt-exportserver-rhel9:17815909932026-06-22redhat
redhatcontainer-native-virtualization/virt-exportserver-rhel9:17818387122026-06-22redhat
redhatcontainer-native-virtualization/virt-exportserver-rhel9:17820129182026-06-22redhat
gokubevirt.io/kubevirt—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
kubevirt.io/kubevirt———

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 97× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 416 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-17 19:32 UTCEPSS rescore
  3. 2026-09-16 14:09 UTCEPSS rescore
  4. 2026-09-16 05:15 UTCEPSS rescore
  5. 2026-09-15 03:12 UTCEPSS rescore
  6. 2026-09-14 07:30 UTCEG score recompute
  7. 2026-09-14 07:30 UTCVendor advisory
  8. 2026-09-14 07:30 UTCGHSA enrichment
  9. 2026-09-13 16:48 UTCEPSS rescore
  10. 2026-09-12 15:02 UTCEPSS rescore
  11. 2026-09-11 14:53 UTCEPSS rescore
  12. 2026-09-11 09:38 UTCEPSS rescore
  13. 2026-09-10 13:38 UTCEG score recompute
  14. 2026-09-10 13:38 UTCVendor advisory
  15. 2026-09-10 13:38 UTCGHSA enrichment
  16. 2026-09-10 12:26 UTCEG score recompute
  17. 2026-09-10 12:26 UTCVendor advisory
  18. 2026-09-10 12:26 UTCGHSA enrichment
  19. 2026-09-10 09:35 UTCEPSS rescore
  20. 2026-09-09 15:32 UTCEG score recompute
  21. 2026-09-09 15:32 UTCVendor advisory
  22. 2026-09-09 15:32 UTCGHSA enrichment
  23. 2026-09-09 14:21 UTCEG score recompute
  24. 2026-09-09 14:21 UTCVendor advisory
  25. 2026-09-09 14:21 UTCGHSA enrichment
Show 75 more
  1. 2026-09-09 13:40 UTCEG score recompute
  2. 2026-09-09 13:40 UTCVendor advisory
  3. 2026-09-09 13:40 UTCGHSA enrichment
  4. 2026-09-09 12:38 UTCEG score recompute
  5. 2026-09-09 12:38 UTCVendor advisory
  6. 2026-09-09 12:38 UTCGHSA enrichment
  7. 2026-09-08 23:02 UTCEG score recompute
  8. 2026-09-08 23:02 UTCVendor advisory
  9. 2026-09-08 23:02 UTCGHSA enrichment
  10. 2026-09-08 22:01 UTCEPSS rescore
  11. 2026-09-08 16:15 UTCEG score recompute
  12. 2026-09-08 16:15 UTCVendor advisory
  13. 2026-09-08 16:15 UTCGHSA enrichment
  14. 2026-09-07 22:33 UTCEG score recompute
  15. 2026-09-07 22:33 UTCVendor advisory
  16. 2026-09-07 22:33 UTCGHSA enrichment
  17. 2026-09-07 21:20 UTCVendor advisory
  18. 2026-09-07 21:19 UTCGHSA enrichment
  19. 2026-09-07 20:59 UTCEG score recompute
  20. 2026-09-07 20:59 UTCVendor advisory
  21. 2026-09-07 20:59 UTCGHSA enrichment
  22. 2026-09-07 12:38 UTCVendor advisory
  23. 2026-09-07 12:38 UTCGHSA enrichment
  24. 2026-09-06 21:14 UTCVendor advisory
  25. 2026-09-06 21:14 UTCGHSA enrichment
  26. 2026-09-06 20:48 UTCEG score recompute
  27. 2026-09-06 20:48 UTCVendor advisory
  28. 2026-09-06 20:48 UTCGHSA enrichment
  29. 2026-09-06 13:48 UTCEPSS rescore
  30. 2026-09-05 15:31 UTCEPSS rescore
  31. 2026-09-04 05:07 UTCEPSS rescore
  32. 2026-09-02 14:12 UTCEPSS rescore
  33. 2026-09-01 13:54 UTCEPSS rescore
  34. 2026-09-01 04:40 UTCEPSS rescore
  35. 2026-08-30 19:18 UTCEPSS rescore
  36. 2026-08-30 01:22 UTCEPSS rescore
  37. 2026-08-28 21:42 UTCEPSS rescore
  38. 2026-08-27 14:25 UTCEPSS rescore
  39. 2026-08-26 14:47 UTCEPSS rescore
  40. 2026-08-25 13:49 UTCEPSS rescore
  41. 2026-08-25 05:07 UTCEG score recompute
  42. 2026-08-25 05:07 UTCVendor advisory
  43. 2026-08-25 05:07 UTCGHSA enrichment
  44. 2026-08-24 14:18 UTCEPSS rescore
  45. 2026-08-24 13:29 UTCEG score recompute
  46. 2026-08-24 13:29 UTCVendor advisory
  47. 2026-08-24 13:29 UTCGHSA enrichment
  48. 2026-08-24 12:24 UTCEG score recompute
  49. 2026-08-24 12:24 UTCVendor advisory
  50. 2026-08-24 12:24 UTCGHSA enrichment
  51. 2026-08-24 00:18 UTCVendor advisory
  52. 2026-08-24 00:18 UTCGHSA enrichment
  53. 2026-08-23 13:21 UTCEG score recompute
  54. 2026-08-23 13:21 UTCVendor advisory
  55. 2026-08-23 13:21 UTCGHSA enrichment
  56. 2026-08-23 00:19 UTCEPSS rescore
  57. 2026-08-22 19:29 UTCEG score recompute
  58. 2026-08-22 19:29 UTCVendor advisory
  59. 2026-08-22 19:29 UTCGHSA enrichment
  60. 2026-08-22 18:56 UTCEG score recompute
  61. 2026-08-22 18:56 UTCVendor advisory
  62. 2026-08-22 18:56 UTCGHSA enrichment
  63. 2026-08-21 23:49 UTCEPSS rescore
  64. 2026-08-21 20:25 UTCEG score recompute
  65. 2026-08-21 20:25 UTCVendor advisory
  66. 2026-08-21 20:25 UTCGHSA enrichment
  67. 2026-08-20 22:56 UTCEPSS rescore
  68. 2026-08-20 22:31 UTCVendor advisory
  69. 2026-08-20 22:31 UTCGHSA enrichment
  70. 2026-08-20 11:10 UTCEG score recompute
  71. 2026-08-20 11:10 UTCVendor advisory
  72. 2026-08-20 11:10 UTCGHSA enrichment
  73. 2026-08-19 17:04 UTCEPSS rescore
  74. 2026-08-18 13:49 UTCEPSS rescore
  75. 2026-08-17 13:47 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-9804?
CVE-2026-9804 is a high vulnerability published on May 28, 2026. 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…
When was CVE-2026-9804 disclosed?
CVE-2026-9804 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9804 actively exploited?
CVE-2026-9804 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.1% of all scored CVEs.
What is the CVSS score of CVE-2026-9804?
CVE-2026-9804 has a CVSS v3 base score of 7.7 (NVD).
How do I remediate CVE-2026-9804?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9804, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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