HKUDS LightRAG allows Path Traversal via function upload_to_input_dir

Exploitation

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

CVSS 4.0

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

EPSS

• CVE-2025-6773: 0.21% estimated exploitation activity in the next 30 days; percentile 11.38 (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.

A vulnerability was found in HKUDS LightRAG up to 1.3.8. It has been declared as critical. Affected by this vulnerability is the function uploadtoinputdir of the file lightrag/api/routers/documentroutes.py of the component File Upload. The manipulation of the argument file.filename leads to path traversal. It is possible to launch the attack on the local host. The identifier of the patch is 60777d535b719631680bcf5d0969bdef79ca4eaf. It is recommended to apply a patch to fix this issue.

Published by the source

27 Jun 2025, 21:30 UTC

Last modified by the source

7 Jul 2026, 17:57 UTC

Source last checked

26 Oct 2026, 13:32 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-v9w6-9hq9-33ch

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-v9w6-9hq9-33ch

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2025-6773

Advisory: HKUDS LightRAG allows Path Traversal via function upload_to_input_dir
IDs: CVE-2025-6773, GHSA-v9w6-9hq9-33ch
Record: https://patchnext.com/advisories/cve-2025-6773 (revision 3, source checked 26 Oct 2026, 13:32 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: lightrag-hku 1.3.8. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI lightrag-hku: affected < 1.3.8; fixed in 1.3.8

## Suggested inspection (read-only)
- `python -m pip show lightrag-hku`: 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 lightrag-hku.
- 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-v9w6-9hq9-33ch (OSV record GHSA-v9w6-9hq9-33ch lists affected ranges: PyPI lightrag-hku >=0 <1.3.8 (fixed))
- Verified: https://github.com/advisories/GHSA-v9w6-9hq9-33ch (GitHub-reviewed advisory GHSA-v9w6-9hq9-33ch lists affected ranges: PyPI lightrag-hku >=0 <1.3.8)

Commands are suggestions: review each one before running it.