UbiquitousLearning mllm up to 2.0.2 Convertor __init__.py load_model shard_file path traversal

Summaryinfo

A vulnerability was found in UbiquitousLearning mllm up to 2.0.2 and classified as problematic. The impacted 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 results in path traversal. This vulnerability is reported as CVE-2026-115800. The attack requires a local approach. Moreover, an exploit is present. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability, which was classified as problematic, was found in UbiquitousLearning mllm up to 2.0.2. Affected is the function load_model of the file pymllm/mobile/convertor/__init__.py of the component Convertor. The manipulation of the argument shard_file with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-115800. The exploitability is told to be easy. Local access is required to approach this attack. Technical details and a public exploit are known. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

The exploit is shared for download at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• UbiquitousLearning

Name

• mllm

Version

• 2.0.0
• 2.0.1
• 2.0.2

Website

• Product: https://github.com/UbiquitousLearning/mllm/

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Submitinfo

Accepted

• Submit #1022230: UbiquitousLearning mllm 2.0.2 (commit bc8f5cdb557f) Path Traversal (by Dem0000000)

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