Vulnerability in Unslothai Unsloth
CVE-2026-112075
A weakness has been identified in unslothai unsloth up to 0.1.501-beta. This affects the function FastSentenceTransformer._is_transformer_module_ref of the file unsloth/models/sentence_transformer.py. This manipulation of the argument Type causes use of externally-controlled input to select classes or code. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 0.1.902-beta is able to mitigate this issue. Patch name: de801746386a53a0cb26216e715a0af863b76ad9. The affected component should be upgraded.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Unslothai Unsloth — versions 0.1.501-beta
Weakness classification (CWE)
References
- VDB-421754 | unslothai unsloth sentence_transformer.py externally-controlled input to select classes or code (technical-description, vdb-entry)
- VDB-421754 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- CVE-2026-112075 | CVE Analysis and Report (third-party-advisory)
- Submit #1009576 | Unsloth AI Unsloth up to 2026.9.11 (commit de801746386a53a0cb26216e715a0af863b76ad9) Unsafe Reflection (third-party-advisory)
- github.com/unslothai/unsloth/issues/12419 (issue-tracking)
- github.com/unslothai/unsloth/pull/11560 (issue-tracking, patch)
- github.com/user-attachments/files/32908312/poc.zip (exploit)
- github.com/unslothai/unsloth/commit/de801746386a53a0cb26216e715a0af863b76ad9 (patch)
- github.com/unslothai/unsloth/releases/tag/v0.1.902-beta (patch)
- github.com/unslothai/unsloth/ (product)
Frequently asked questions
- What is CVE-2026-112075?
- CVE-2026-112075 is a medium-severity vulnerability in Unslothai Unsloth, classified under Use of Externally-Controlled Input to Select Classes or Code (Unsafe Reflection). CVSS score: 6.3/10. Published 2026-10-19.
- How severe is CVE-2026-112075?
- Medium severity. CVSS v3 base score is 6.3 out of 10.