CVE-2026-21436 eopkg has Path Traversal: '../filedir' vulnerability
A malicious package can escape the destination directory during installation, allowing arbitrary file writes on the host system.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-21436?
CVE-2026-21436 is a medium-severity path traversal vulnerability in getsolus eopkg, published on 1 Jan 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
eopkg is a Solus package manager implemented in python3. In versions prior to 4.4.0, a malicious package could escape the directory set by `--destdir`. This requires the installation of a package from a malicious or compromised source. Files in such packages would not be installed in the path given by `--destdir`, but on a different location on the host. The issue has been fixed in v4.4.0. Users only installing packages from the Solus repositories are not affected.
Weakness: CWE-24
Which versions are affected by CVE-2026-21436?
It affects 1 product.
Products include Getsol Eopkg.
How do I fix CVE-2026-21436?
No fix has been published for CVE-2026-21436 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-21436 being exploited?
There is no known exploitation of CVE-2026-21436 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in getsolus eopkg
Sources
Also known as GHSA-786v-47cq-qm6m.