Auth Bypass
277 entries
Every Auth Bypass entry VulnWatch has indexed, sorted by publication date.
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LiteLLM: Password hash exposure and pass-the-hash authentication bypass
### Impact Three issues combine into a full authentication bypass chain: 1. Weak hashing: User passwords are stored as unsalted SHA-256 hashes, making them vulnerable to rainbow table attacks and tr...
MLflow is vulnerable to an authorization bypass affecting the AJAX endpoint
MLflow is vulnerable to an authorization bypass affecting the AJAX endpoint used to download saved model artifacts. Due to missing access‑control validation, a user without permissions to a given expe...
PYSEC-2026-94
MLflow is vulnerable to an authorization bypass affecting the AJAX endpoint used to download saved model artifacts. Due to missing access‑control validation, a user without permissions to a given expe...
LiteLLM: Authentication bypass via OIDC userinfo cache key collision
### Impact When JWT authentication is enabled (`enable_jwt_auth: true`), the OIDC userinfo cache uses `token[:20]` as the cache key. JWT headers produced by the same signing algorithm generate ident...
LiteLLM: Privilege escalation via unrestricted proxy configuration endpoint
### Impact The `/config/update endpoint` does not enforce admin role authorization. A user who is already authenticated into the platform can then use this endpoint to do the following: - Modify p...
mlflow: FastAPI job endpoints under `/ajax-api/3.0/jobs/*` are not protected by authentication or authorization
In mlflow/mlflow, the FastAPI job endpoints under `/ajax-api/3.0/jobs/*` are not protected by authentication or authorization when the `basic-auth` app is enabled. This vulnerability affects the lates...
Mlflow: Command Injection when serving models with enable_mlserver=True
A command injection vulnerability exists in Mlflow when serving a model with `enable_mlserver=True`. The `model_uri` is embedded directly into a shell command executed via `bash -c` without proper san...
langflow: /profile_pictures/{folder_name}/{file_name} endpoint file reading
## Vulnerability ### Path Traversal in `GET /api/v1/files/profile_pictures/{folder_name}/{file_name}` The `download_profile_picture` function in `src/backend/base/langflow/api/v1/files.py` construct...
MLflow Use of Default Password Authentication Bypass Vulnerability
This vulnerability allows remote attackers to bypass authentication on affected installations of MLflow. Authentication is not required to exploit this vulnerability. The specific flaw exists within...
Milvus: Unauthenticated Access to Restful API on Metrics Port (9091) Leads to Critical System Compromise
## Summary Milvus exposes TCP port 9091 by default with two critical authentication bypass vulnerabilities: 1. The `/expr` debug endpoint uses a weak, predictable default authentication token derive...
LangGraph SQLite Checkpoint Filter Key SQL Injection POC for SqliteStore
### Summary LangGraph's SQLite store implementation contains SQL injection vulnerabilities using direct string concatenation without proper parameterization, allowing attackers to inject arbitrary SQL...
MLflow Weak Password Requirements Authentication Bypass Vulnerability
MLflow Weak Password Requirements Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of MLflow. Authentication is not re...
llama-index has Insecure Temporary File
The llama_index library version 0.12.33 sets the NLTK data directory to a subdirectory of the codebase by default, which is world-writable in multi-user environments. This configuration allows local u...
vLLM is vulnerable to timing attack at bearer auth
### Summary The API key support in vLLM performed validation using a method that was vulnerable to a timing attack. This could potentially allow an attacker to discover a valid API key using an approa...
Flowise has unsandboxed remote code execution via Custom MCP
### Summary The Custom MCPs feature is designed to execute OS commands, for instance, using tools like `npx` to spin up local MCP Servers. However, Flowise's inherent authentication and authorization...
Ollama vulnerable to Cross-Domain Token Exposure
Cross-Domain Token Exposure in server.auth.getAuthorizationToken in Ollama 0.6.7 allows remote attackers to steal authentication tokens and bypass access controls via a malicious realm value in a WWW-...
PYSEC-2025-147
Cross-Domain Token Exposure in server.auth.getAuthorizationToken in Ollama 0.6.7 allows remote attackers to steal authentication tokens and bypass access controls via a malicious realm value in a WWW-...
LiteLLM Has an Improper Authorization Vulnerability
An improper authorization vulnerability exists in the main-latest version of BerriAI/litellm. When a user with the role 'internal_user_viewer' logs into the application, they are provided with an over...
PYSEC-2025-118
Gradio is an open-source Python package that allows quick building of demos and web application for machine learning models, API, or any arbitrary Python function. Gradio's Access Control List (ACL) f...
Gradio Blocked Path ACL Bypass Vulnerability
## Summary Gradio's Access Control List (ACL) for file paths can be bypassed by altering the letter case of a blocked file or directory path. This vulnerability arises due to the lack of case normali...
MLflow's excessive directory permissions allow local privilege escalation
Excessive directory permissions in MLflow leads to local privilege escalation when using spark_udf. This behavior can be exploited by a local attacker to gain elevated permissions by using a ToCToU at...
PYSEC-2024-224
Excessive directory permissions in MLflow leads to local privilege escalation when using spark_udf. This behavior can be exploited by a local attacker to gain elevated permissions by using a ToCToU at...
litellm vulnerable to improper access control in team management
berriai/litellm version 1.34.34 is vulnerable to improper access control in its team management functionality. This vulnerability allows attackers to perform unauthorized actions such as creating, upd...
MLflow allows low privilege users to delete any artifact
A broken access control vulnerability exists in mlflow/mlflow versions before 2.10.1, where low privilege users with only EDIT permissions on an experiment can delete any artifacts. This issue arises...
PYSEC-2024-51
A broken access control vulnerability exists in mlflow/mlflow versions before 2.10.1, where low privilege users with only EDIT permissions on an experiment can delete any artifacts. This issue arises...