Gradio FileExplorer preprocess path traversal allows files outside root_dir to reach callbacks

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N · score source

EPSS

• CVE-2026-49119: 0.69% estimated exploitation activity in the next 30 days; percentile 52.84 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Gradio before 6.16.0 contain a path traversal vulnerability in the FileExplorer component's preprocess() method that allows unauthenticated attackers to escape the configured root directory by supplying path segments containing directory traversal sequences or absolute paths. Attackers can provide crafted path segments that cause os.path.join to discard the rootdir prefix entirely, resulting in arbitrary file read or exposure of sensitive files outside the intended directory.

Published by the source

1 Jul 2026, 21:36 UTC

Last modified by the source

2 Oct 2026, 18:55 UTC

Source last checked

26 Oct 2026, 13:54 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-j36p-7w88-g82j

2. Revision 2 · amended · 25 Oct 2026

   Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

3. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-j36p-7w88-g82j

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# Patch Next advisory brief: CVE-2026-49119

Advisory: Gradio FileExplorer preprocess path traversal allows files outside root_dir to reach callbacks
IDs: CVE-2026-49119, GHSA-j36p-7w88-g82j
Record: https://patchnext.com/advisories/cve-2026-49119 (revision 3, source checked 26 Oct 2026, 13:54 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.7)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: gradio 6.16.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI gradio: affected < 6.16.0; fixed in 6.16.0

## Suggested inspection (read-only)
- `python -m pip show gradio`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on gradio.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-j36p-7w88-g82j (OSV record GHSA-j36p-7w88-g82j lists affected ranges: PyPI gradio >=0 <6.16.0 (fixed))
- Verified: https://github.com/advisories/GHSA-j36p-7w88-g82j (GitHub-reviewed advisory GHSA-j36p-7w88-g82j lists affected ranges: PyPI gradio >=0 <6.16.0)

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