CVE-2026-10720 MicroCeph path traversal issue in the remote-import API
Trusted cluster members can exploit path traversal in the remote-import API to disrupt daemons and corrupt cluster state.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-10720?
CVE-2026-10720 is a medium-severity path traversal vulnerability in Canonical Microceph, published on 19 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Canonical MicroCeph versions from the squid and tentacle track are vulnerable to a path traversal issue in the remote-import API. Holders of a trusted cluster mTLS certificate (such as enrolled cluster members) or join token can manipulate files in an imported remote cluster within the /var/snap/microceph confinement. This would allow daemon disruption and pollution of the cluster state.
Weakness: CWE-23
Which versions are affected by CVE-2026-10720?
3 open source packages ship an affected version, including github.com/canonical/microceph/microceph.
| Package | Affected | Fixed in |
|---|---|---|
github.com/canonical/microceph/microceph Go | All versions | 0.0.0-20260609072127-5c2760d8fb76 |
github.com/canonical/microceph/microceph Go | All versions | 0.0.0-20260609072127-5c2760d8fb76 |
github.com/canonical/microceph/microceph Go | All versions | 0.0.0-20260609072127-5c2760d8fb76 |
How do I fix CVE-2026-10720?
Upgrade github.com/canonical/microceph/microceph to 0.0.0-20260609072127-5c2760d8fb76 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-10720 being exploited?
There is no known exploitation of CVE-2026-10720 in the wild and no public exploit code.
Sources
Also known as GHSA-xg3j-c7q4-f9ph, GO-2026-5755.