CVE-2026-28384— Authenticated RCE via unsanitized compression_algorithm
Quick assessment
Affected
Canonical lxd
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
LXD是Canonical开源的一款基于Linux系统用于管理应用程序的容器。 LXD 4.12至6.6版本存在安全漏洞，该漏洞源于对compression_algorithm参数清理不当，可能导致经过身份验证的非特权用户通过API调用执行LXD守护进程命令。
Possible ATT&CK Techniques 2 AI
T1548 · Abuse Elevation Control Mechanism T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2026-28384
Vulnerability Information
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Vulnerability Title
Authenticated RCE via unsanitized compression_algorithm
Source: CVE Program / CVE List V5
Vulnerability Description
An improper sanitization of the compression_algorithm parameter in Canonical LXD allows an authenticated, unprivileged user to execute commands as the LXD daemon on the LXD server via API calls to the image and backup endpoints. This issue affected LXD from 4.12 through 6.6 and was fixed in the snap versions 5.0.6-e49d9f4 (channel 5.0/stable), 5.21.4-1374f39 (channel 5.21/stable), and 6.7-1f11451 (channel 6.0 stable). The channel 4.0/stable is not affected as it contains version 4.0.10.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
LXD 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LXD是Canonical开源的一款基于Linux系统用于管理应用程序的容器。 LXD 4.12至6.6版本存在安全漏洞，该漏洞源于对compression_algorithm参数清理不当，可能导致经过身份验证的非特权用户通过API调用执行LXD守护进程命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-28384
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Patches & Fixes for CVE-2026-28384 (3)
Vendor Advisories for CVE-2026-28384 (2)
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503 Service Temporarily Unavailable media-coverage
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V. Comments for CVE-2026-28384
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