CVE-2026-14890
Critical
Description
SGLang uses an expert-parallel backup subsystem that exposes a ZeroMQ PULL socket on a routable network interface that does not contain authentication or deserialization safeguards, allowing an attacker to provide a malicious pickle file that results in unauthenticated remote code execution when the feature is enabled and the service is reachable over the network.
SeverityCritical
CVSS9.1
Exploit probability—
ProductLmsys Sglang
PublishedJul 16, 2026
First seenJul 16, 2026
Weakness typeCWE-502Deserialization of untrusted data
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| lmsys sglang | v ≤ 0.5.14 | — |
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