CVE-2026-73555
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
vllmPyPI | < 0.26.0 | 0.26.0 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-hwrm-c4cx-rf4jghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-73555ghsaADVISORY
- github.com/vllm-project/vllm/commit/e87521626febe2763f997691d1599de4175f4324nvdWEB
- github.com/vllm-project/vllm/pull/46415nvdWEB
- github.com/vllm-project/vllm/releases/tag/v0.26.0nvdWEB
- github.com/vllm-project/vllm/security/advisories/GHSA-hwrm-c4cx-rf4jnvdWEB
News mentions
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