CVE-2026-28385: CWE-918: Server-Side Request Forgery (SSRF) in Canonical lxd
In Canonical LXD versions 4.12 through 6.9, a Server-Side Request Forgery (SSRF) vulnerability in the image import functionality allows authenticated users with the can_create_images entitlement to interact with internal network infrastructure via the /images endpoint. When importing an image from a URL source, the LXD daemon fails to validate or restrict outbound destination IP addresses, allowing connections to loopback, RFC1918 private ranges, and cloud metadata endpoints. This enables error-based port scanning and unauthorized interaction with internal HTTP services from the daemon's network position.
AI Analysis
Technical Summary
CVE-2026-28385 is an SSRF vulnerability in Canonical LXD affecting versions 6.0 through 6.9. The vulnerability arises because the LXD daemon does not validate or restrict outbound IP addresses when importing images from a URL via the /images endpoint. Authenticated users with the can_create_images entitlement can leverage this to make the daemon connect to internal network infrastructure, including loopback and RFC1918 private IP ranges, as well as cloud metadata endpoints. This enables error-based port scanning and unauthorized interactions with internal HTTP services from the daemon's network context.
Potential Impact
The vulnerability allows authenticated users with specific entitlements to perform SSRF attacks, potentially accessing internal network services that are otherwise inaccessible. This can lead to unauthorized information disclosure via interaction with internal HTTP services and cloud metadata endpoints. The CVSS score of 5 (medium severity) reflects limited impact on confidentiality with no direct integrity or availability impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is documented at this time. Until a fix is available, restrict or review the assignment of the can_create_images entitlement to trusted users only to limit potential exploitation.
CVE-2026-28385: CWE-918: Server-Side Request Forgery (SSRF) in Canonical lxd
Description
In Canonical LXD versions 4.12 through 6.9, a Server-Side Request Forgery (SSRF) vulnerability in the image import functionality allows authenticated users with the can_create_images entitlement to interact with internal network infrastructure via the /images endpoint. When importing an image from a URL source, the LXD daemon fails to validate or restrict outbound destination IP addresses, allowing connections to loopback, RFC1918 private ranges, and cloud metadata endpoints. This enables error-based port scanning and unauthorized interaction with internal HTTP services from the daemon's network position.
CVSS v3.1
Score 5.0medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-28385 is an SSRF vulnerability in Canonical LXD affecting versions 6.0 through 6.9. The vulnerability arises because the LXD daemon does not validate or restrict outbound IP addresses when importing images from a URL via the /images endpoint. Authenticated users with the can_create_images entitlement can leverage this to make the daemon connect to internal network infrastructure, including loopback and RFC1918 private IP ranges, as well as cloud metadata endpoints. This enables error-based port scanning and unauthorized interactions with internal HTTP services from the daemon's network context.
Potential Impact
The vulnerability allows authenticated users with specific entitlements to perform SSRF attacks, potentially accessing internal network services that are otherwise inaccessible. This can lead to unauthorized information disclosure via interaction with internal HTTP services and cloud metadata endpoints. The CVSS score of 5 (medium severity) reflects limited impact on confidentiality with no direct integrity or availability impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is documented at this time. Until a fix is available, restrict or review the assignment of the can_create_images entitlement to trusted users only to limit potential exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- canonical
- Date Reserved
- 2026-02-27T11:06:14.064Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3eae476e08203f7dc7e0c4
Added to database: 06/26/2026, 16:52:23 UTC
Last enriched: 06/26/2026, 17:07:18 UTC
Last updated: 06/26/2026, 17:52:58 UTC
Views: 3
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