Vulnerability · Published Oct 19, 2026 · Assigned by VulDB
CVE-2026-112075unslothai unsloth sentence_transformer.py externally-controlled input to select classes or code
Medium 6.3
In plain English
A medium-severity security flaw in unsloth from unslothai. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
Weakness: CWE-470 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
References
- VDB-421754 | unslothai unsloth sentence_transformer.py externally-controlled input to select classes or code vdb-entry, technical-description
- 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
- https://github.com/unslothai/unsloth/issues/12419 issue-tracking
- https://github.com/unslothai/unsloth/pull/11560 issue-tracking, patch
- https://github.com/user-attachments/files/32908312/poc.zip exploit
- https://github.com/unslothai/unsloth/commit/de801746386a53a0cb26216e715a0af863b76ad9 patch
- https://github.com/unslothai/unsloth/releases/tag/v0.1.902-beta patch
- https://github.com/unslothai/unsloth/ product