getsolus eopkg up to 4.3.x path traversal

Summaryinfo

A vulnerability was found in getsolus eopkg up to 4.3.x. It has been classified as problematic. This issue affects some unknown processing. The manipulation leads to path traversal. This vulnerability is referenced as CVE-2026-21436. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in getsolus eopkg up to 4.3.x. This issue affects an unknown code block. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-24. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize "../" sequences that can resolve to a location that is outside of that directory. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-21436 since 12/29/2025. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 4.4.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch e7694323ed64e08b5b4b108fff273c64125cd39d is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-0025). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• getsolus

Name

• eopkg

Version

• 4.0
• 4.1
• 4.2
• 4.3

License

• open-source

Website

• Product: https://github.com/getsolus/eopkg/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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