CVE-2026-63293 json
Arbitrary File Read/Write: metadata.yaml symlink in image allows host filesystem access as root
published 2026-08-12 2 mo ago modified 2026-10-24 15 d ago also EUVD-2026-57540
- cvss
- 9.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 48%
- public exploits
- 0
- none known
Summary
A link following vulnerability in LXD allows an attacker to achieve arbitrary file read and write operations on the host system. When importing or unpacking an image archive, LXD fails to validate whether the metadata.yaml file is a symbolic link. An attacker can exploit this flaw by providing a crafted image archive with a symlinked metadata.yaml file pointing to target file paths on the host system.
Patch / fix
- Canonical LXD 4.0.12, 5.0.8, 5.21.6, 6.10
- lxd openSUSE Leap 16.0 5.21.6-bp160.1.1
opensuse advisories openSUSE-SU-2026:21788-1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 mo ago
Exploit prediction
0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/canonical/lxd/security/advisories/GHSA-j825-cg34-5fr5 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
Affected products
- Canonical LXD
Classification
- Weakness
-
- CWE-59 Improper Link Resolution Before File Access
References
-
github.com
/canonical/lxd/security/advisories/GHSA-j825-cg34-5fr5
vdb-entry, vendor-advisory, exploit
Sources
- CVE List CVE-2026-63293
- NVD CVE-2026-63293
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.