How severe is CVE-2026-10720?

CVE-2026-10720 has a CVSS 4.0 base score of 5.1, rated medium severity.

Is CVE-2026-10720 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-10720?

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

Does CVE-2026-10720 have an EU (EUVD) identifier?

Yes. CVE-2026-10720 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-37990.

When was CVE-2026-10720 published?

CVE-2026-10720 was published on 2026-06-19 and last updated on 2026-06-22.

CVE-2026-10720

CVE-2026-10720 is a medium-severity vulnerability with a CVSS 4.0 base score of 5.1. 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-23.

Key facts

Severity: Medium (CVSS 4.0 base score 5.1)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-37990
Weakness: CWE-23
Published: 2026-06-19
Last modified: 2026-06-22

Description

Canonical MicroCeph versions from the squid and tentacle track are vulnerable to a path traversal issue in the remote-import API. Holders of a trusted cluster mTLS certificate (such as enrolled cluster members) or join token can manipulate files in an imported remote cluster within the /var/snap/microceph confinement. This would allow daemon disruption and pollution of the cluster state.

Frequently asked questions

What is CVE-2026-10720?: Canonical MicroCeph versions from the squid and tentacle track are vulnerable to a path traversal issue in the remote-import API. Holders of a trusted cluster mTLS certificate (such as enrolled cluster members) or join token can manipulate files in an imported remote cluster within the /var/snap/microceph confinement. This would allow daemon disruption and pollution of the cluster state.
How severe is CVE-2026-10720?: CVE-2026-10720 has a CVSS 4.0 base score of 5.1, rated medium severity.
Is CVE-2026-10720 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-10720?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-10720 have an EU (EUVD) identifier?: Yes. CVE-2026-10720 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-37990.
When was CVE-2026-10720 published?: CVE-2026-10720 was published on 2026-06-19 and last updated on 2026-06-22.

References

https://github.com/canonical/microceph/pull/758

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