github.com
https://github.com/vllm-project/vllm/commit/e87521626febe2763f997691d1599de4175f4324 CVE-2026-73555
MEDIUM
vLLM: Unauthenticated Internal Path and Username Disclosure via Validation Error Messages
Record summary
CVE-2026-73555 has a selected CVSS score of 5.3 (medium).
Description
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.
Description source: CVE List
Affected products and versions
1| Product | Source | Version range | Status |
|---|---|---|---|
| CVE List | < 0.26.0 | affected |
References
4github.com
https://github.com/vllm-project/vllm/pull/46415 github.com
https://github.com/vllm-project/vllm/releases/tag/v0.26.0 github.comConfirmation
https://github.com/vllm-project/vllm/security/advisories/GHSA-hwrm-c4cx-rf4j