sentence-transformers local model loading bypasses trust_remote_code and executes custom Python
sentence-transformers contains a security control bypass vulnerability that allows attackers to achieve arbitrary code execution by exploiting a logic flaw in the import_module_class helper within sentence_transformers/util/misc.py, where the guard condition includes an 'or os.path.exists(model_name_or_path)' clause that satisfies the trust gate whenever the supplied path exists on the local filesystem, regardless of the trust_remote_code=False argument. Attackers who can control or influence the contents of a model directory on disk can place malicious Python files such as modeling_*.py referenced via modules.json, causing the code to execute at import time when an application loads the model with SentenceTransformer(path, trust_remote_code=False), bypassing the documented security contract and achieving code execution within the loading process.
Software afectado
Haz clic en una tecnología para ver todas sus vulnerabilidades.
| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Python (PyPI) | sentence-transformers | < 5.6.0 | 5.6.0 |
Referencias
- https://nvd.nist.gov/vuln/detail/CVE-2026-68770
- https://github.com/huggingface/sentence-transformers/issues/3801
- https://github.com/huggingface/sentence-transformers/pull/3807
- https://github.com/huggingface/sentence-transformers/pull/3935
- https://github.com/huggingface/sentence-transformers/commit/626eb602b088878a8173bcab69225f68411b99e1
- https://github.com/huggingface/sentence-transformers/commit/ae1acc3fb2aa2004577b297eb4a915ce7a03316a
- https://github.com/huggingface/sentence-transformers
- https://github.com/huggingface/sentence-transformers/releases/tag/v5.6.0
- https://github.com/huggingface/sentence-transformers/releases/tag/v6.0.0
- https://www.vulncheck.com/advisories/sentence-transformers-arbitrary-code-execution-on-local-model-load-despite-trust-remote-code-false
- https://pypi.org/project/sentence-transformers
- https://github.com/advisories/GHSA-jhr6-gm9c-rqjv
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Debilidad (CWE)
CWE-94- Plataforma
- Python (PyPI)
- Paquete
sentence-transformers- Publicada
- 31.07.2026
- Actualizado
- 11.10.2026 15:18
Fuentes y licencias
OSV / GitHub Advisory Database - PYSEC-2026-4164 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-jhr6-gm9c-rqjv - CC BY 4.0
Historial de vulnerabilidades: sentence-transformers
Todas las vulnerabilidades publicadas de este paquete (Python (PyPI)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
Esta es la única vulnerabilidad conocida de este paquete.
Identifica las vulnerabilidades de tu aplicación
Con la integración de DockRay y el inventario de software activado, DockRay compara las versiones notificadas de los componentes con las vulnerabilidades conocidas y avisa de las coincidencias confirmadas. La cobertura depende de la tecnología compatible y de los avisos disponibles.