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CVE-2026-68770— sentence-transformers Arbitrary Code Execution on Local Model Load Despite trust_remote_code=False

Quick assessment

Affected
Hugging Face sentence-transformers
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Hugging Face Sentence Transformers是Hugging Face公司的一款计算句子向量表示的模型库。 Hugging Face Sentence Transformers 5.5.1及之前版本存在代码注入漏洞，该漏洞源于sentence_transformers/util/misc.py中import_module_class辅助函数存在逻辑缺陷，导致即使设置trust_remote_code=False，攻击者仍可通过控制模型目录内容放置恶意Python文件，在加载模型时实

CVSS 9.8 · Critical EPSS 0.52% · P42

Affected Version Matrix 1

VendorProduct Version RangeStatus
Hugging Face sentence-transformers ≤ 5.5.1 affected
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I. Basic Information for CVE-2026-68770

Vulnerability Information
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Vulnerability Title
sentence-transformers Arbitrary Code Execution on Local Model Load Despite trust_remote_code=False
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Hugging Face Sentence Transformers 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hugging Face Sentence Transformers是Hugging Face公司的一款计算句子向量表示的模型库。 Hugging Face Sentence Transformers 5.5.1及之前版本存在代码注入漏洞，该漏洞源于sentence_transformers/util/misc.py中import_module_class辅助函数存在逻辑缺陷，导致即使设置trust_remote_code=False，攻击者仍可通过控制模型目录内容放置恶意Python文件，在加载模型时实
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Hugging Face sentence-transformers 0 ~ 5.5.1 -

II. Public POCs for CVE-2026-68770

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7889 chars
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III. Intelligence Information for CVE-2026-68770

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Patches & Fixes for CVE-2026-68770 (2)

Vendor Advisories for CVE-2026-68770 (1)

Other References for CVE-2026-68770 (2)

IV. Related Vulnerabilities

Same vendor: Hugging Face
Same weakness: CWE-94

V. Comments for CVE-2026-68770

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