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  5. CVE-2025-54286

CVE-2025-54286: Canonical LXD CSRF Vulnerability When Using Client Certificate Authentication with the LXD-UI

October 2, 2025

OIDC authentication uses cookies with the SameSite=Strict attribute, preventing cookies from being sent with requests from other sites. Therefore, CSRF does not occur as long as web services in a Same Site relationship (same eTLD+1) with the origin running LXD-UI are trusted.

However, since the SameSite concept does not apply to client certificates, CSRF protection that doesn’t rely on the SameSite attribute is necessary.

Note that when using cross-origin fetch API, client certificates are not sent in no-cors mode due to CORS restrictions (according to the WHATWG Fetch specification(https://fetch.spec.whatwg.org/#credentials), client certificates are treated as credentials), making cross-site attacks using fetch API difficult unless CORS settings are vulnerable. However, since LXD’s API parses request bodies as JSON even when Content-Type is text/plain or application/x-www-form-urlencoded, CSRF attacks exploiting HTML form submissions are possible.

References

  • github.com/advisories/GHSA-p8hw-rfjg-689h
  • github.com/canonical/lxd
  • github.com/canonical/lxd/security/advisories/GHSA-p8hw-rfjg-689h
  • nvd.nist.gov/vuln/detail/CVE-2025-54286

Code Behaviors & Features

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Affected versions

All versions starting from 5.0 before 5.0.5, all versions starting from 5.1 before 5.21.4, all versions starting from 6.0 before 6.5

Fixed versions

  • 5.0.5
  • 5.21.4
  • 6.5

Solution

Upgrade to versions 5.0.5, 5.21.4, 6.5 or above.

Impact 8.3 HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-352: Cross-Site Request Forgery (CSRF)

Source file

go/github.com/canonical/lxd/CVE-2025-54286.yml

Spotted a mistake? Edit the file on GitLab.

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