How severe is CVE-2026-6437?

CVE-2026-6437 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-6437 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-6437?

CVE-2026-6437 affects Amazon Efs Csi Driver. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-6437?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-6437 have an EU (EUVD) identifier?

Yes. CVE-2026-6437 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23500.

When was CVE-2026-6437 published?

CVE-2026-6437 was published on 2026-04-17 and last updated on 2026-06-17.

CVE-2026-6437

CVE-2026-6437 is a medium-severity vulnerability in Amazon Efs Csi Driver with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-88.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 6.9
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23500
Weakness: CWE-88
Affected product: Amazon Efs Csi Driver
Published: 2026-04-17
Last modified: 2026-06-17

Description

Improper neutralization of argument delimiters in the volume handling component in AWS EFS CSI Driver (aws-efs-csi-driver) before v3.0.1 allows remote authenticated users with PersistentVolume creation permissions to inject arbitrary mount options via comma injection. To remediate this issue, users should upgrade to version v3.0.1

Frequently asked questions

What is CVE-2026-6437?: Improper neutralization of argument delimiters in the volume handling component in AWS EFS CSI Driver (aws-efs-csi-driver) before v3.0.1 allows remote authenticated users with PersistentVolume creation permissions to inject arbitrary mount options via comma injection. To remediate this issue, users should upgrade to version v3.0.1
How severe is CVE-2026-6437?: CVE-2026-6437 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-6437 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-6437?: CVE-2026-6437 affects Amazon Efs Csi Driver. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-6437?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-6437 have an EU (EUVD) identifier?: Yes. CVE-2026-6437 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23500.
When was CVE-2026-6437 published?: CVE-2026-6437 was published on 2026-04-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:amazon:efs_csi_driver:*:*:*:*:*:kubernetes:*:*

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