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CVE-2026-34760

vLLM: Downmix Implementation Differences as Attack Vectors Against Audio AI Models PUBLISHED

Description (CNA)

vLLM is an inference and serving engine for large language models (LLMs). From version 0.5.5 to before version 0.18.0, Librosa defaults to using numpy.mean for mono downmixing (to_mono), while the international standard ITU-R BS.775-4 specifies a weighted downmixing algorithm. This discrepancy results in inconsistency between audio heard by humans (e.g., through headphones/regular speakers) and audio processed by AI models (Which infra via Librosa, such as vllm, transformer). This issue has been patched in version 0.18.0.

Affected (CNA)

Vendor / productVersions
vllm-project / vllmaffected >= 0.5.5, < 0.18.0

CWE

CWE-20

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.