LXD client recursive file pull allows directory escape via malicious VM agent

Description

Improper link resolution in the recursive file pull feature of the LXD CLI client in Canonical LXD versions 4.0.2 up to 6.9 (fixed in 4.0.14, 5.0.10 and 5.21.8) on Linux allows an attacker with root access inside a virtual machine to write attacker-controlled files or directory trees to arbitrary paths on the client host, with the operator's privileges. The attacker does this by using a modified lxd-agent that returns inconsistent SFTP directory listings and Lstat results.

Scores

EPSS (exploitation in 30 days)

0.19% · top 91% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.8.

Weakness

• CWE-59 Improper link resolution before file access ('link following') (opens in a new tab)All about CWE-59 and its CVEs

Affected products

• Canonical · LXD

  • affected 4.0.2 – < 4.0.14
  • affected 5.0.0 – < 5.0.10
  • affected 5.21.0 – < 5.21.8
  • affected 6.0 – < 6.9

What to do

Solution: Upgrade to LXD versions 4.0.14, 5.0.10, 5.21.8 or later.

References (1)

• https://github.com/canonical/lxd/security/advisories/GHSA-mr8v-hx34-hfvf (opens in a new tab)vendor-advisory

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-87798](https://trackcve.app/badge/CVE-2026-87798.svg)](https://trackcve.app/cve/CVE-2026-87798)

Record last updated 28 Sept 2026, 16:32 UTC.