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Vulnerability record · CVE-2026-3059 · published 12 March 2026

CVE-2026-3059: Lmsys sglang deserialization of untrusted data vulnerability

Lmsys · Sglang

SGLang's multimodal generation module is vulnerable to unauthenticated remote code execution through the ZMQ broker, which deserializes untrusted data using pickle.loads() without authentication.

9.8 CVSS 3.1 Critical EPSS 1.3% · top 29.7% CWE-502 · Deserialization of untrusted data
9.8CVSS 3.1 base score
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

SGLang's multimodal generation module is vulnerable to unauthenticated remote code execution through the ZMQ broker, which deserializes untrusted data using pickle.loads() without authentication.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/sgl-project/sglang/blob/main/python/sglang/multimodal_gen/runtime/scheduler_client.py Product
https://github.com/sgl-project/sglang/pull/20904
https://github.com/sgl-project/sglang/releases/tag/v0.5.10
https://github.com/sgl-project/sglang/security/advisories/GHSA-3cp7-c6q2-94xr Broken Link
https://orca.security/resources/blog/sglang-llm-framework-rce-vulnerabilities/ ExploitMitigationThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-3059), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.