Is CVE-2026-102634 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-102634?

CVE-2026-102634 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-102634

Description

SGLang through 0.5.20 in prefill/decode disaggregation mode fails to validate duplicate bootstrap_room fields in /generate requests with Mooncake KV transfer backend. Unauthenticated attackers can send concurrent requests with identical bootstrap_room values to crash scheduler processes or hang other users' requests until transfer timeout.