CVE-2026-57845

Hugging Face Datasets < 5.2.0 Pickle Deserialization RCE via Pandas Builder

Hugging Face Datasets before 5.2.0 contains an insecure deserialization vulnerability that allows attackers to execute arbitrary Python code by crafting a malicious pickle file loaded through the deprecated pandas packaged builder. Attackers can supply a pickle-backed dataset that is processed by Pandas._generate_tables via pandas.read_pickle() without validation, so when a victim calls datasets.load_dataset("pandas", data_files=...), the embedded __reduce__ payload executes code with the victim process's privileges.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Datasets

CVE-2026-25874

LeRobot Unsafe Deserialization Remote Code Execution via gRPC

LeRobot through 0.6.1 contains an unsafe deserialization vulnerability in the async inference pipeline where pickle.loads() is used to deserialize data received over unauthenticated gRPC channels without TLS in the policy server and robot client components. An unauthenticated network-reachable attacker can achieve arbitrary code execution on the server or client by sending a crafted pickle payload through the SendPolicyInstructions, SendObservations, or GetActions gRPC calls.

CVSS 4.0 · 9.3 Critical EPSS 15.5% KEV · Not listed

Vendors

Huggingface

Products

Lerobot

CVE-2026-124588

huggingface finetrainers Model Index model.py resolve_component_cls code injection

A security flaw has been discovered in huggingface finetrainers 0.1.0/0.2.0. The impacted element is the function resolve_component_cls of the file finetrainers/utils/model.py of the component Model Index Handler. Performing a manipulation of the argument Library results in code injection. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Finetrainers

CVE-2026-115533

CVE-2026-115533

The LeRobot library is vulnerable to arbitrary code execution via unsafe dynamic class instantiation in the from_pretrained() method and related paths. When loading a policy's processor configuration from a repository, the library uses the class field within the JSON configuration to dynamically resolve and instantiate Python classes using importlib.import_module() and getattr().

CVSS n/a EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Lerobot

CVE-2026-108857

Hugging Face Text Embeddings Inference through 1.9.4 Cleartext API Key Logging

Hugging Face Text Embeddings Inference through 1.9.4 contains a cleartext logging vulnerability that exposes the configured api_key because the router's Args struct lacks a redact attribute for it. Attackers with access to router logs, container output, or OTLP telemetry can recover the Bearer token and call the protected embedding and rerank endpoints.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Text-embeddings-inference

CVE-2026-66007

Datasets Path Traversal via Unsanitized file_name Metadata

Datasets through 5.0.0, fixed in commit f989ef9, contains a path traversal vulnerability in folder-based dataset builders where the file_name metadata field is not properly validated before being joined to the dataset directory. Attackers can supply crafted file_name values with directory traversal sequences to read arbitrary local files, which are then embedded into output when save_to_disk or push_to_hub is called.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Datasets

CVE-2026-65010

Datasets Symlink-following Arbitrary File Write via Extractor.extract()

Datasets through 5.00, fixed in commit ad2d853, contains a symlink-following vulnerability in Extractor.extract() that allows local attackers to write arbitrary files by pre-planting symlinks at predictable output paths. Attackers can redirect archive extraction to arbitrary filesystem locations in shared-cache environments, enabling overwrite of sensitive files and potential privilege escalation or code execution.

CVSS 4.0 · 4.4 Medium EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Datasets

CVE-2026-80047

Hugging Face Transformers library writes remote code to disk prior to consent check

A vulnerability in Hugging Face Transformers (versions 4.57.0 to 5.16.1) allows remote Python files to be written to local disk without user consent when using GenerativePreTrainedModel.load_custom_generate(). The function fetches and caches a remote module file before performing the required trust_remote_code consent check, inverting the security model enforced by other code-loading paths (such as AutoConfig, AutoModel, and AutoTokenizer). As a result, attacker‑controlled Python code from custom_generate/generate.py is copied into the user’s ~/.cache/huggingface/modules directory even if the user declines the trust prompt. Although execution is correctly gated, the file write is not reversible and can persist across sessions. This can lead to persistent, unauthorized files on disk and stale cache collisions where cached attacker code may later be executed during trusted model loads. The issue stems from an unconditional file write in dynamic_module_utils.py prior to any trust verification.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Transformers

CVE-2026-85670

tokenizers BpeBuilder Buffer Overflow via merge token

tokenizers (Hugging Face) is affected by an out-of-bounds buffer access in BpeBuilder::build (tokenizers/src/models/bpe/model.rs). When loading a tokenizer.json via Tokenizer::from_file/from_str, the builder sizes a scratch buffer to the longest vocabulary key, then writes each concatenated merge rule into it. A merge whose concatenated token exceeds the longest vocabulary key overruns the buffer, which Rust turns into a panic that aborts the process in Rust and FFI embeddings. This occurs at load time with no encoding required, so an attacker who supplies a crafted tokenizer.json can cause a denial of service. A secondary defect at the same location can cause a usize underflow (panic in debug, potential memory corruption in release) when continuing_subword_prefix is set and a merge token is shorter than the prefix. Observed in version 0.23.1.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Tokenizers

CVE-2026-5241

Policy Bypass in LightGlue Nested Config Resolution in huggingface/transformers

A vulnerability in the LightGlue model loading path of huggingface/transformers version 5.2.0 allows an attacker-controlled model repository to execute arbitrary code during model initialization. The issue arises because the `trust_remote_code` parameter, intended to prevent remote code execution, is overridden by untrusted serialized configuration data in a nested code path. Specifically, when loading a LightGlue model using `AutoModel.from_pretrained()` with `trust_remote_code=False`, the `LightGlueConfig` reads the `trust_remote_code` value from the untrusted `config.json` file and propagates it into nested `AutoConfig.from_pretrained()` calls. This results in the execution of attacker-provided Python modules, even when the victim explicitly disables remote code execution. The vulnerability poses a high risk for environments such as API inference servers, research notebooks, CI/CD pipelines, and model evaluation workers, potentially leading to credential theft, lateral movement, or persistence/backdoor deployment.

CVSS 3.1 · 9.6 Critical EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Transformers

CVE-2026-44513

Diffusers: `trust_remote_code` bypass via `custom_pipeline` and local custom components

Diffusers is the a library for pretrained diffusion models. Prior to 0.38.0, a trust_remote_code bypass in DiffusionPipeline.from_pretrained allows arbitrary remote code execution despite the user passing trust_remote_code=False (or omitting it, which is the default). The vulnerability has three variants, all sharing the same root cause — the trust_remote_code gate was implemented inside DiffusionPipeline.download() rather than at the actual dynamic-module load site, so any code path that bypassed or short-circuited download() also bypassed the security check. DiffusionPipeline.from_pretrained('repoA', custom_pipeline='attacker/repoB', trust_remote_code=False) — the gate evaluated against repoA's file list rather than repoB's, so repoB's pipeline.py was loaded and executed. DiffusionPipeline.from_pretrained('/local/snapshot', custom_pipeline='attacker/repoB', trust_remote_code=False) — the local-path branch never invoked download(), so the gate was never reached and remote code from repoB executed. DiffusionPipeline.from_pretrained('/local/snapshot', trust_remote_code=False) where the snapshot contains custom component files (e.g. unet/my_unet_model.py) referenced from model_index.json — same root cause; the local path skipped download() and custom component code executed. This vulnerability is fixed in 0.38.0.

CVSS 3.1 · 8.8 High EPSS 1.1% KEV · Not listed

Vendors

Huggingface

Products

Diffusers

CVE-2026-75104

Hugging Face Transformers Path Traversal via Checkpoint Index

Hugging Face Transformers fails to validate shard filenames in checkpoint index files, allowing attackers to read arbitrary files outside the model directory. Attackers can supply malicious index files with parent-directory references or absolute paths that are joined without validation, enabling file disclosure and filesystem reconnaissance.

CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Transformers

CVE-2026-68770

sentence-transformers Arbitrary Code Execution on Local Model Load Despite trust_remote_code=False

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.

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Transformers

CVE-2026-45804

Diffusers: TOCTOU Trust Remote Code Bypass

Diffusers is the a library for pretrained diffusion models. Prior to 0.38.0, Diffusers' DiffusionPipeline.from_pretrained flow can bypass the trust_remote_code guard because download() validates model_index.json and custom pipeline code before later loading from a cached folder that can change, allowing a Hub repository with custom .py pipeline code to execute through the custom pipeline flow without passing custom_pipeline or trust_remote_code=True. This issue is fixed in version 0.38.0.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Diffusers

CVE-2026-69112

Hugging Face Accelerate 1.14.0 Path Traversal and DoS via weight_map

Hugging Face Accelerate through 1.14.0 contains a path traversal vulnerability in load_checkpoint_in_model and load_checkpoint_and_dispatch functions that fail to sanitize weight_map entries from sharded checkpoint indexes. Attackers can supply relative paths with ../ sequences or absolute paths to read arbitrary files, or point shard entries at named pipes to cause indefinite blocking and denial of service.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Accelerate

CVE-2026-71281

peft Unsafe Deserialization via torch.load() Without weights_only in LoRA-GA and CorDA Modules

Hugging Face peft's LoRA-GA and CorDA initialization modules (src/peft/tuners/lora/corda.py lines ~102 and ~163, and src/peft/tuners/lora/loraga.py line ~101) call torch.load on config-specified cache/covariance files without weights_only=True, bypassing peft's own safe-loading wrapper used elsewhere in the codebase.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Peft

CVE-2026-9856

Path Traversal in huggingface/transformers

A vulnerability in huggingface/transformers versions <=5.8.0.dev0 allows an attacker to perform arbitrary file writes via path traversal. The issue resides in the `save_pretrained()` methods of `PreTrainedTokenizerBase` and `ProcessorMixin`, where keys from the `chat_template` dictionary are used directly as filenames without proper validation. An attacker can exploit this by publishing a malicious Hugging Face Hub repository with a crafted `tokenizer_config.json` file. When a victim downloads and saves the tokenizer or processor, the attacker-controlled keys can escape the intended save directory, enabling arbitrary file writes with attacker-controlled content. This vulnerability affects multiple processors inheriting from `ProcessorMixin`, including Idefics, Florence, Gemma, Phi, and Qwen-VL.

CVSS 3.0 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Transformers

CVE-2026-65920

Diffusers Path Traversal via weight_map Arbitrary File Read

Diffusers through 0.39.0, fixed in commit cee298c, contains a path traversal vulnerability in the _get_checkpoint_shard_files function that allows attackers to read arbitrary files by supplying malicious weight_map values in model index JSON. Attackers can use ../ sequences or absolute paths in weight_map entries to escape the model directory and read safetensors files outside the intended location during model loading.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Diffusers

CVE-2026-63086

text-generation-inference 3.3.7 SSRF via fetch_image in multimodal chat completions

text-generation-inference through 3.3.7 contains a server-side request forgery (SSRF) vulnerability in the OpenAI-compatible multimodal chat completions endpoint that allows unauthenticated network attackers to coerce the server into issuing arbitrary HTTP GET requests by supplying a crafted image_url value in chat message content. The fetch_image function in router/src/validation.rs performs no validation of private, loopback, link-local, or cloud metadata target addresses, and the reqwest HTTP client follows redirects by default, enabling attackers to bypass scheme checks via redirect chains to reach internal services and cloud instance-metadata endpoints for internal port scanning and credential theft.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Text-generation-inference

CVE-2026-4372

Arbitrary Remote Code Execution via `_attn_implementation_internal` Config Injection in huggingface/transformers

A critical remote code execution vulnerability exists in all versions of the HuggingFace transformers library prior to version 5.3.0. The vulnerability allows an attacker to craft a malicious `config.json` file containing the `_attn_implementation_internal` field set to an attacker-controlled HuggingFace Hub repository ID. When a victim loads this model using the standard `AutoModelForCausalLM.from_pretrained()` API, the library downloads and executes arbitrary Python code from the attacker's repository with the victim's full OS privileges. This issue arises due to unfiltered deserialization of configuration attributes, insufficient sanitization of internal fields, and unsandboxed execution of downloaded kernels. The vulnerability bypasses the `trust_remote_code` security mechanism, is invisible to the victim, and exploits the standard documented usage pattern, making it particularly severe. Users are advised to upgrade to version 5.3.0 or later to mitigate this issue.

CVSS 3.0 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Huggingface

Products

Transformers