What is CVE-2026-93088?

CVE-2026-93088 is a critical-severity vulnerability in Sglang, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-09-22.

How severe is CVE-2026-93088?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Sglang

CVE-2026-93088

SGLang's multimodal generation runtime is vulnerable to unauthenticated arbitrary code execution because the disaggregated-diffusion orchestrator's DiffusionServer binds an unauthenticated ZeroMQ ROUTER socket to a network interface and passes the final frame of received multipart messages directly to pickle.loads() before any validation occurs.

Vulnerability class: Insecure Deserialization

Published 2026-09-22 · last modified 2026-09-22.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Sglang

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

Frequently asked questions

What is CVE-2026-93088?: CVE-2026-93088 is a critical-severity vulnerability in Sglang, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-09-22.
How severe is CVE-2026-93088?: Critical severity. CVSS v3 base score is 9.8 out of 10.