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

Source: https://junglewise.ai/threats/cve-2026-112082-a-vulnerability-was-identified-in-sgl-project-sglang-up-to-0-5  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-19. Updated: 2026-10-19  
License: CC BY 4.0 with a link back

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](https://junglewise.ai/threats/technologies/sgl-project-sglang). Vendors: [Sgl-Project](https://junglewise.ai/threats/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

- [https://github.com/sgl-project/sglang/](https://github.com/sgl-project/sglang/)
- [https://github.com/sgl-project/sglang/issues/42071](https://github.com/sgl-project/sglang/issues/42071)

## Related threats

- [SGLang weight exporter denial of service via invalid group name](https://junglewise.ai/threats/cve-2026-112083-a-security-flaw-has-been-discovered-in-sgl-project-sglang-up-to)
- [SGLang prefill/decode disaggregation DoS in /generate with Mooncake backend](https://junglewise.ai/threats/cve-2026-102634-sglang-through-0-5-20-in-prefill-decode-disaggregation-mode)