CVE-2026-102634
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductSgl-project Sglang
PublishedSep 29, 2026
First seenSep 29, 2026
Weakness typeCWE-694CWE-694
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sgl-project sglang | v ≤ 0.5.20 | — |
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