CVE-2026-28384

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.

CVSS v3 9.9 CRITICAL

9.9^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://discourse.ubuntu.com/t/lxd-authenticated-remote-code-execution-fixes-available/78365	Issue Tracking
https://github.com/canonical/lxd/commit/043696a13171ace7dd4c2b32d34ce039ab629052	Patch
https://github.com/canonical/lxd/commit/7046979645c2ce1b63b2f9e60ddf6cbc4c4b78f9	Patch
https://github.com/canonical/lxd/commit/b7b411caf5c4971bfe2386c72128f44d7e2aaf4f	Patch
https://github.com/canonical/lxd/security/advisories/GHSA-4rmf-rcp8-2r9g	Vendor Advisory
https://github.com/canonical/lxd/security/advisories/GHSA-4rmf-rcp8-2r9g	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:canonical:lxd::::::::
	cpe:2.3:a:canonical:lxd::::::::
	cpe:2.3:a:canonical:lxd::::::::
	cpe:2.3:a:canonical:lxd::::::::

History

No history.

Information

Published : 2026-03-12 15:16

Updated : 2026-09-11 15:33

NVD link : CVE-2026-28384

Mitre link : CVE-2026-28384

CVE.ORG link : CVE-2026-28384

JSON object : View

Products Affected

canonical

lxd

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

{"id": "CVE-2026-28384", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-28384", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-03-13T16:30:00.719316Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.9, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 3.1}], "cvssMetricV40": [{"type": "Secondary", "source": "security@ubuntu.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.4, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "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/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "security@ubuntu.com", "affectedData": [{"repo": "https://github.com/canonical/lxd", "vendor": "Canonical", "product": "lxd", "versions": [{"status": "affected", "version": "6.0", "lessThan": "6.7", "versionType": "semver"}, {"status": "affected", "version": "5.21.0", "lessThan": "5.21.4", "versionType": "semver"}, {"status": "affected", "version": "5.0.0", "lessThan": "5.0.6", "versionType": "semver"}, {"status": "affected", "version": "4.12"}], "platforms": ["Linux"], "packageName": "lxd", "programFiles": ["images.go", "instance_backup.go"], "defaultStatus": "unaffected"}]}], "published": "2026-03-12T15:16:27.247", "references": [{"url": "https://discourse.ubuntu.com/t/lxd-authenticated-remote-code-execution-fixes-available/78365", "tags": ["Issue Tracking"], "source": "security@ubuntu.com"}, {"url": "https://github.com/canonical/lxd/commit/043696a13171ace7dd4c2b32d34ce039ab629052", "tags": ["Patch"], "source": "security@ubuntu.com"}, {"url": "https://github.com/canonical/lxd/commit/7046979645c2ce1b63b2f9e60ddf6cbc4c4b78f9", "tags": ["Patch"], "source": "security@ubuntu.com"}, {"url": "https://github.com/canonical/lxd/commit/b7b411caf5c4971bfe2386c72128f44d7e2aaf4f", "tags": ["Patch"], "source": "security@ubuntu.com"}, {"url": "https://github.com/canonical/lxd/security/advisories/GHSA-4rmf-rcp8-2r9g", "tags": ["Vendor Advisory"], "source": "security@ubuntu.com"}, {"url": "https://github.com/canonical/lxd/security/advisories/GHSA-4rmf-rcp8-2r9g", "tags": ["Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Undergoing Analysis", "weaknesses": [{"type": "Secondary", "source": "security@ubuntu.com", "description": [{"lang": "en", "value": "CWE-78"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Una sanitizaci\u00f3n inadecuada del par\u00e1metro compression_algorithm en Canonical LXD permite a un usuario autenticado y sin privilegios ejecutar comandos como el demonio LXD en el servidor LXD a trav\u00e9s de llamadas a la API a los puntos finales de imagen y copia de seguridad. Este problema afect\u00f3 a LXD desde la versi\u00f3n 4.12 hasta la 6.6 y fue solucionado en las versiones snap 5.0.6-e49d9f4 (canal 5.0/stable), 5.21.4-1374f39 (canal 5.21/stable) y 6.7-1f11451 (canal 6.0 stable). El canal 4.0/stable no est\u00e1 afectado ya que contiene la versi\u00f3n 4.0.10."}], "lastModified": "2026-09-11T15:33:43.067", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "249C1FEA-54B9-47A6-9589-FC598A65405E", "versionEndIncluding": "4.12"}, {"criteria": "cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D567937A-A4F5-4A41-B639-81A5DD095C84", "versionEndExcluding": "5.0.6", "versionStartIncluding": "5.0.0"}, {"criteria": "cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "873DE516-61FD-46A3-8C62-C9665C4A8563", "versionEndExcluding": "5.21.4", "versionStartIncluding": "5.21.0"}, {"criteria": "cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3379FF55-2DB8-4EDF-8641-7ECB011F4F18", "versionEndExcluding": "6.7", "versionStartIncluding": "6.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@ubuntu.com"}