Vulnerability details
CVE-2026-112816
Canonical LXD
Improper certificate validation in the HTTPS listener in LXD
CVSS 4.0
10.0Critical
Official description
Improper certificate validation in the HTTPS listener in Canonical LXD 4.0.14, 5.0.10, 5.21.8, 6.9 before 4.0.15, 5.0.11, 5.21.9, 6.10.1 allows an unauthenticated attacker to authenticate as any trusted client and gain full access to the cluster and managed virtual machines via a crafted certificate chain.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 10.0Critical | 4.0 | CVEProject cvelistV5 (CNA) (canonical) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Canonical | LXD | 4.0.14 ≤ v < 4.0.15 | CVEProject cvelistV5 (CNA) |
| Canonical | LXD | 5.0.10 ≤ v < 5.0.11 | CVEProject cvelistV5 (CNA) |
| Canonical | LXD | 5.21.8 ≤ v < 5.21.9 | CVEProject cvelistV5 (CNA) |
| Canonical | LXD | 6.9.0 ≤ v < 6.10.1 | CVEProject cvelistV5 (CNA) |
References and advisories
6- https://github.com/canonical/lxd/security/advisories/GHSA-99jp-jwmc-65p4 vendor-advisory
- https://discourse.ubuntu.com/t/security-advisory-critical-vulnerability-found-in-canonical-lxd-and-microcloud/90557 vendor-advisory
- https://discourse.ubuntu.com/t/lxd-6-10-1-lts-has-been-released/90024 release-notes
- https://discourse.ubuntu.com/t/lxd-5-21-9-lts-has-been-released/90565/1 release-notes
- https://discourse.ubuntu.com/t/lxd-5-0-11-lts-has-been-released/90570/1 release-notes
- https://discourse.ubuntu.com/t/lxd-4-0-15-lts-has-been-released/90571 release-notes
Kolun on Telegram @kolunsec
Exploited CVEs, key news and a daily digest
Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.
Details
- Published
- 2026-10-30
- Last updated
- 2026-10-31
- State
- Published
- Assigner (CNA)
- canonical
- Kolun priority
- 27 · Low
Exploit prediction (EPSS)
0.3%
Probability of exploitation in 30 days
23.2%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-295Improper certificate validation