CVE-2026-48752 is a critical-severity security vulnerability in github.com/lxc/incus/v7/cmd/incusd (go), affecting versions < 7.2.0. It is fixed in 7.2.0.
Summary A specially crafted image or instance backup can be used to read or create/write arbitrary files on the host; possibly leading to arbitrary command execution. Details For container images, internal/server/storage/utils.go calls archive.Unpack(imageFile, destPath, ...). The tar extraction path in shared/archive/archive.go excludes device nodes, but it does not reject a top-level templates symlink. For instance backups, internal/server/storage/drivers/driverdirvolumes.go:rsync.LocalCopy uses argument -a (archive mode), but does not add --safe-links. This allows a top-level templates symlink. In practice, this allows a malicious actor to access an arbitrary directory and edit arbitrary files in it. PoC Malicious container image Below, the templates directory is mapped to /etc/cron.d on the host, but it can be mapped anywhere. After that, create a cronjob to run id as root. Malicious instance backup Below, the templates directory is mapped to /etc/cron.d on the host, but it can be mapped anywhere. After that, create a cronjob to run id as root. Impact Arbitrary file read and write on the host via unsanitized symlink; possibly leading to command execution.
CVE-2026-48752 has a CVSS score of 9.9 (Critical). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment.
A fixed version is available (7.2.0). Upgrading removes the vulnerable code path.
go
github.com/lxc/incus/v7/cmd/incusd (< 7.2.0)github.com/lxc/incus/v7/cmd/incusd → 7.2.0 (go)Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
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Already deployed Kodem? See CVE-2026-48752 in your environment →Upgrade github.com/lxc/incus/v7/cmd/incusd to 7.2.0 or later to resolve this vulnerability.
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CVE-2026-48752 is a critical-severity security vulnerability in github.com/lxc/incus/v7/cmd/incusd (go), affecting versions < 7.2.0. It is fixed in 7.2.0.
CVE-2026-48752 has a CVSS score of 9.9 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
github.com/lxc/incus/v7/cmd/incusd (go) versions < 7.2.0 is affected.
Yes. CVE-2026-48752 is fixed in 7.2.0. Upgrade to this version or later.
Whether CVE-2026-48752 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
Upgrade github.com/lxc/incus/v7/cmd/incusd to 7.2.0 or later.