Is CVE-2026-109225 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-109225?

CVE-2026-109225 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-109225

Description

SGLang through 0.5.21 contains an unbounded memory allocation vulnerability that allows unauthenticated remote attackers to exhaust memory by uploading oversized files to /v1/audio/transcriptions. Attackers can send concurrent large multipart uploads, which are fully read into memory before validation, to crash the HTTP/tokenizer worker and deny service.