What is CVE-2026-3060?

CVE-2026-3060 is a critical-severity vulnerability in Lmsys Sglang, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-03-12.

How severe is CVE-2026-3060?

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

Deserialization in Lmsys Sglang

CVE-2026-3060

SGLang' encoder parallel disaggregation system is vulnerable to unauthenticated remote code execution through the disaggregation module, which deserializes untrusted data using pickle.loads() without authentication.

Vulnerability class: Insecure Deserialization

EPSS: 0.012 (63.6th percentile) — read the EPSS interpretation.

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.

Affected products

Lmsys Sglang
Sglang — versions 0.5.10

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

cret@cert.org (Product)
cret@cert.org (Exploit, Third Party Advisory, Mitigation)
cret@cert.org
cret@cert.org

Frequently asked questions

What is CVE-2026-3060?: CVE-2026-3060 is a critical-severity vulnerability in Lmsys Sglang, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-03-12.
How severe is CVE-2026-3060?: Critical severity. CVSS v3 base score is 9.8 out of 10.