CVE-2026-112082: SGLang denial of service in expert distribution endpoint

CVE-2026-112082 · Severity: high · CVSS 7.5 · Published 2026-10-19

SGLang is a high-performance serving framework for large language models. A denial of service vulnerability in the expert distribution recording functionality allows an attacker to crash the entire server with a single HTTP request to certain endpoints. The server becomes unresponsive and requires manual restart.

Technologies: Sgl-Project SGLang. Vendors: Sgl-Project.

Quick answers

Is CVE-2026-112082 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-112082 being exploited in the wild.
How severe is CVE-2026-112082?
High severity, with a CVSS score of 7.5, published 19 October 2026.
Which products and versions are affected?
Sgl-Project SGLang up to 0.5.19.
Is there a fix for CVE-2026-112082?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-112082 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-112082?
Check whether you run Sgl-Project SGLang at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability exists in the Scheduler.expert_distribution_handle function of SGLang up to version 0.5.19. When expert distribution recording is not enabled (missing --expert-distribution-recorder-mode flag), three HTTP endpoints (/start_expert_distribution_record, /stop_expert_distribution_record, /dump_expert_distribution_record) raise an unhandled exception in the scheduler process, causing the scheduler child process to die and triggering a SIGQUIT that crashes the entire server. An attacker can trigger this remotely with a simple GET or POST request to any of these endpoints without authentication.

Affected products

  • sgl-project SGLang up to 0.5.19

Timeline

  • 2026-10-19: disclosed
  • other: Publicly available exploit

References

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