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.
References
| Link | Resource |
|---|---|
| https://github.com/vllm-project/vllm/commit/e87521626febe2763f997691d1599de4175f4324 | Patch |
| https://github.com/vllm-project/vllm/pull/46415 | Issue Tracking Patch |
| https://github.com/vllm-project/vllm/releases/tag/v0.26.0 | Release Notes |
| https://github.com/vllm-project/vllm/security/advisories/GHSA-hwrm-c4cx-rf4j | Mitigation Vendor Advisory |
Configurations
History
02 Oct 2026, 19:28
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Vllm vllm
Vllm |
|
| CPE | cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* | |
| References | () https://github.com/vllm-project/vllm/commit/e87521626febe2763f997691d1599de4175f4324 - Patch | |
| References | () https://github.com/vllm-project/vllm/pull/46415 - Issue Tracking, Patch | |
| References | () https://github.com/vllm-project/vllm/releases/tag/v0.26.0 - Release Notes | |
| References | () https://github.com/vllm-project/vllm/security/advisories/GHSA-hwrm-c4cx-rf4j - Mitigation, Vendor Advisory |
Information
Published : 2026-08-13 15:20
Updated : 2026-10-02 19:28
NVD link : CVE-2026-73555
Mitre link : CVE-2026-73555
CVE.ORG link : CVE-2026-73555
JSON object : View
Products Affected
vllm
- vllm
CWE
CWE-209
Generation of Error Message Containing Sensitive Information