vLLM is an inference and serving engine for large language models. Prior to 0.26.0, the validation_exception_handler in vllm/entrypoints/openai/server_utils.py converts FastAPI RequestValidationError objects with str(exc), and sanitize_message in vllm/entrypoints/utils.py does not remove traceback-style file paths, allowing unauthenticated malformed JSON requests to /v1/chat/completions, /v1/completions, /tokenize, and /detokenize to disclose the OS username, home and virtual-environment paths, Python version, internal package structure, line numbers, and endpoint handler names. This issue is fixed in version 0.26.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/vllm-project/vllm/commit/e87521626febe2763f997691d1599de4175…
security-advisories@github.com
https://github.com/vllm-project/vllm/pull/46415
security-advisories@github.com
https://github.com/vllm-project/vllm/releases/tag/v0.26.0
security-advisories@github.com
https://github.com/vllm-project/vllm/security/advisories/GHSA-hwrm-c4cx-rf4j
security-advisories@github.com