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CVE-2026-66898

Path traversal via unvalidated instance name in backup tarball restore enables root file write / RCE PUBLISHED

Description (CNA)

A path traversal vulnerability in LXD allows an attacker to manipulate file system paths during backup import and restore operations. When importing or restoring a backup archive, LXD fails to validate instance and storage volume names contained within the archive metadata. An attacker can exploit this flaw by supplying a crafted backup archive with malicious instance or volume names containing path traversal sequences, potentially allowing file access or overwriting outside the designated restore directory.

Affected (CNA)

Vendor / productVersions
Canonical / LXDaffected 4.0.0 before 4.0.12; affected 5.0.0 before 5.0.4; affected 5.21.0 before 5.21.2; affected 6.0 before 6.1

CWE

CWE-22

References

ADP enrichment

CISA-ADP

No English description supplied.