CVE-2026-113738 Details
Description
A vulnerability has been found in R6410418 Jackrong-llm-finetuning-guide up to ef2b17f2798cd18cd85375080c35a58397ad0d09. This vulnerability affects the function extract_mtp_heads of the file qwen-mtp-gguf/scripts/qwen_mtp_gguf_pipeline.py of the component MTP weight_map Handler. The manipulation of the argument shard_name leads to path traversal. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.
A path traversal vulnerability has been identified in the R6410418 Jackrong-llm-finetuning-guide repository, specifically in the MTP weight_map handler component. This issue affects the extract_mtp_heads function within the qwen-mtp-gguf/scripts/qwen_mtp_gguf_pipeline.py file, up to commit ef2b17f2798cd18cd85375080c35a58397ad0d09. The vulnerability arises because the function does not properly validate shard names from the model's weight map, allowing absolute paths to be used. As a result, the pipeline can read arbitrary local files from the machine running it, exfiltrating their contents by injecting them into a model asset that is published as part of the GGUF output. The vulnerability can be exploited remotely, and has been publicly disclosed.
To address this vulnerability, shard names should be validated before being opened. Absolute paths and those containing '..' should be rejected, and checks should be implemented to ensure that resolved paths remain within the repository's snapshot directory.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 21, 2026CISA-ADP
Assessed Oct 28, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/R6410418/Jackrong-llm-finetuning-guide/ | [email protected] | Source CodeVendor |
| https://github.com/R6410418/Jackrong-llm-finetuning-guide/issues/16 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/user-attachments/files/33115067/poc.zip | [email protected] | Broken LinkExploit |
| https://vuldb.com/cve/CVE-2026-113738 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/1016281 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/422910 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/422910/cti | [email protected] | AdvisoryPermission Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| R6410418 Jackrong-llm-finetuning-guide | <ef2b17f2798cd18cd85375080c35a58397ad0d09> |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 28, 2026 | CVE Modified | CISA-ADP |
| Oct 21, 2026 | New CVE Received | [email protected] |