CVE‑2026‑112816：LXD HTTPS 監聽器未正確驗證憑證
CVE-2026-112816 - Improper certificate validation in the HTTPS listener in LXD
**LXD 的 HTTPS 監聽器存在憑證驗證缺陷，攻擊者可在未授權情況下偽造憑證，冒充任何受信任客戶取得完整叢集存取權。
- 受影響版本**：LXD 4.0.14、5.0.10、5.21.8、6.9 以及 4.0.15 以前、5.0.11 以前、5.21.9 以前、6.10.1 以前。
此 CVE 允許未授權攻擊者以任何受信任客戶身份取得完整叢集存取權，提醒使用者盡速升級至已修補版本。
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.
Impact
Affected Products
The following products are affected by CVE-2026-112816
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
| ID | Vendor | Product | Action |
|---|---|---|---|
| 1 | Canonical | lxd |
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | CRITICAL | cc1ad9ee-3454-478d-9317-d3e869d708bc | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Update Canonical LXD to a patched version to fix improper certificate validation.
- Update Canonical LXD to version 4.0.15 or later.
- Update Canonical LXD to version 5.0.11 or later.
- Update Canonical LXD to version 5.21.9 or later.
- Update Canonical LXD to version 6.10.1 or later.
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-112816.
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-112816 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-112816
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-112816 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-112816 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
十月. 30, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-112816', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-10-30T17:02:09.413887Z'} -
New CVE Received by [email protected]
十月. 30, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-295 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/112xxx/CVE-2026-112816.json">CVE-2026-112816</a> Added Reference https://discourse.ubuntu.com/t/lxd-4-0-15-lts-has-been-released/90571 Added Reference https://discourse.ubuntu.com/t/lxd-5-0-11-lts-has-been-released/90570/1 Added Reference https://discourse.ubuntu.com/t/lxd-5-21-9-lts-has-been-released/90565/1 Added Reference https://discourse.ubuntu.com/t/lxd-6-10-1-lts-has-been-released/90024 Added Reference https://discourse.ubuntu.com/t/security-advisory-critical-vulnerability-found-in-canonical-lxd-and-microcloud/90557 Added Reference https://github.com/canonical/lxd/security/advisories/GHSA-99jp-jwmc-65p4
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.