CVE-2026-112269
MEDIUM
CVSS 6.5
Published: 2026-10-19
Modified: 2026-10-19
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Description
SGLang through 0.5.22 with the Mooncake disaggregation backend accepts unauthenticated decode registration messages on the Prefill rank ZMQ PULL socket, allowing denial of service. Network-adjacent attackers can send many registrations with unique mooncake_session_id values and large nested-buffer frames to exhaust Prefill memory until the scheduler is OOM-killed.
Quick Facts
| CVE ID | CVE-2026-112269 |
| CVSS Score | 6.5 |
| Vector | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Published | 2026-10-19 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/sgl-project/sglang/blob/v0.5.22/python/sg…
- https://github.com/sgl-project/sglang/blob/v0.5.22/python/sg…
- https://github.com/sgl-project/sglang/blob/v0.5.22/python/sg…
- https://github.com/sgl-project/sglang/issues/45012
- https://www.vulncheck.com/advisories/sglang-through-0.5.22-m…
- https://github.com/sgl-project/sglang/issues/45012