How severe is CVE-2026-3351?

CVE-2026-3351 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-3351 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3351?

CVE-2026-3351 affects Canonical Lxd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3351?

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

Does CVE-2026-3351 have an EU (EUVD) identifier?

Yes. CVE-2026-3351 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9286.

When was CVE-2026-3351 published?

CVE-2026-3351 was published on 2026-03-03 and last updated on 2026-06-17.

CVE-2026-3351

CVE-2026-3351 is a medium-severity vulnerability in Canonical Lxd with a CVSS 3.x base score of 4.3. 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-862.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v4: 2.1
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9286
Weakness: CWE-862
Affected product: Canonical Lxd
Published: 2026-03-03
Last modified: 2026-06-17

Description

Improper authorization in the API endpoint GET /1.0/certificates in Canonical LXD 6.6 on Linux allows an authenticated, restricted user to enumerate all certificate fingerprints trusted by the lxd server.

Frequently asked questions

What is CVE-2026-3351?: Improper authorization in the API endpoint GET /1.0/certificates in Canonical LXD 6.6 on Linux allows an authenticated, restricted user to enumerate all certificate fingerprints trusted by the lxd server.
How severe is CVE-2026-3351?: CVE-2026-3351 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-3351 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3351?: CVE-2026-3351 affects Canonical Lxd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3351?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-3351 have an EU (EUVD) identifier?: Yes. CVE-2026-3351 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9286.
When was CVE-2026-3351 published?: CVE-2026-3351 was published on 2026-03-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:canonical:lxd:6.6:*:*:*:*:*:*:*

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