CVE-2026-6369
CVE-2026-6369 is a medium-severity vulnerability in Canonical Livepatch Client with a CVSS 3.x base score of 5.5. 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-306.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- CVSS v4: 5.7
- EPSS exploit prediction: 0% (2nd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-23862
- Weakness: CWE-306
- Affected product: Canonical Livepatch Client
- Published:
- Last modified:
Description
An improper access control vulnerability in the canonical-livepatch snap client prior to version 10.15.0 allows a local unprivileged user to obtain a sensitive, root-level authentication token by sending an unauthenticated request to the livepatchd.sock Unix domain socket. This vulnerability is exploitable on systems where an administrator has already enabled the Livepatch client with a valid Ubuntu Pro subscription. This token allows an attacker to access Livepatch services using the victim's credentials, as well as potentially cause issues to the Livepatch server.
Frequently asked questions
- What is CVE-2026-6369?
- An improper access control vulnerability in the canonical-livepatch snap client prior to version 10.15.0 allows a local unprivileged user to obtain a sensitive, root-level authentication token by sending an unauthenticated request to the livepatchd.sock Unix domain socket. This vulnerability is exploitable on systems where an administrator has already enabled the Livepatch client with a valid Ubuntu Pro subscription. This token allows an attacker to access Livepatch services using the victim's credentials, as well as potentially cause issues to the Livepatch server.
- How severe is CVE-2026-6369?
- CVE-2026-6369 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2026-6369 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-6369?
- CVE-2026-6369 affects Canonical Livepatch Client. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-6369?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-6369 have an EU (EUVD) identifier?
- Yes. CVE-2026-6369 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23862.
- When was CVE-2026-6369 published?
- CVE-2026-6369 was published on 2026-04-20 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:canonical:livepatch_client:*:*:*:*:*:*:*:*
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