GHSA-7f67-crqm-jgh7 · Severity: high · Ecosystem: go — Incus container image templating arbitrary host file read and write
Incus is a system container and virtual machine manager. Versions 6.21.0 and below allow a user with the ability to launch a container with a custom image (e.g a member of the ‘incus’ group) to use directory traversal or symbolic links in the templating functionality to achieve host arbitrary file read, and host arbitrary file write. This ultimately results in arbitrary command execution on the host. When using an image with a metadata.yaml containing templates, both the source and target paths are not checked for symbolic links or directory traversal. This can also be exploited in IncusOS. A fix is planned for versions 6.0.6 and 6.21.0, but they have not been released at the time of publication.
Conclusion & alert: CVE-2026-23954 is rated High Exploit Risk (67.7/100): CVSS High severity, with low exploitation likelihood (EPSS 0.73%). Core evidence: 2 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.05% | 0.73% | +0.68% |
| 2 | 2026-03-31 | 0.04% | 0.05% | +0.01% |
| 3 | 2026-02-18 | — | 0.04% | — |
Full EPSS history (4 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.7 | 3.1 | HIGH |
|
2.3 | 5.8 | [email protected] |
GHSA-7f67-crqm-jgh7 · Severity: high · Ecosystem: go — Incus container image templating arbitrary host file read and write
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2026-23954: 2 source package rows (incus, incus-feature); 29 state rows across 2 repos (3.23-community, edge-community); fixed 9, open 20. | https://security.alpinelinux.org/vuln/CVE-2026-23954 |
debian
|
not yet assigned | CVE-2026-23954 not yet assigned priority: Debian including 2 source packages (incus, lxd), 5 status rows across 4 suites (bookworm, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2026-23954 |
ubuntu
|
medium | CVE-2026-23954 medium priority: Ubuntu including 2 source packages (incus, lxd), 11 status rows across 7 suites (bionic, focal, jammy, noble, questing, upstream, xenial): needs-triage 6, DNE 4, released 1. | https://ubuntu.com/security/CVE-2026-23954 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| linuxcontainers | incus | <= 6.0.5 | cpe:2.3:a:linuxcontainers:incus:*:*:*:*:*:*:*:* |
| linuxcontainers | incus | >= 6.1.0, < 6.21.0 | cpe:2.3:a:linuxcontainers:incus:*:*:*:*:*:*:*:* |