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CVE-2026-3059 — Vulnerability in sglang — CVE Details

CRITICAL

SGLang's multimodal generation module is vulnerable to unauthenticated remote code execution through the ZMQ broker

Published March 12, 2026Updated June 29, 2026Source: osv

Summary

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.

Advisory Timeline

  • First published March 12, 2026 (214 days ago).
  • Last revised June 29, 2026 — 109 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

pip
Update sglang to 0.5.10 or later
pip install "sglang>=0.5.10"

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: pypi (1).

PackageEcosystemAffectedFixed In
sglang
pypi
0.1.10, 0.1.11, 0.1.12, 0.1.13 (+138 more)0.5.10

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-502
    Deserialization of Untrusted DataMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

References

Frequently Asked Questions

What is CVE-2026-3059?
SGLang's multimodal generation module is vulnerable to unauthenticated remote code execution through the ZMQ broker This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2026-3059?
CVE-2026-3059 affects sglang. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-3059 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-rgq9-fqf5-fv58
GHSA-3cp7-c6q2-94xr
PYSEC-2026-539

Related CVEs

  • CVE-2026-7304
    CRITICAL

    SGLang: Unauthenticated RCE via --enable-custom-logit-processor

  • CVE-2026-7301
    CRITICAL

    SGLanG: Multimodal scheduler deserializes untrusted pickle data on 0.0.0.0 ROUTER socket

  • CVE-2026-3060
    CRITICAL

    SGLang's encoder parallel disaggregation system is vulnerable to unauthenticated remote code execution through the disaggregation module

  • CVE-2026-7302
    CRITICAL

    SGLang's multimodal generation runtime has an unauthenticated path traversal vulnerability

  • CVE-2026-7304
    CRITICAL

    SGLang: Unauthenticated RCE via --enable-custom-logit-processor

  • CVE-2026-7301
    CRITICAL

    SGLanG: Multimodal scheduler deserializes untrusted pickle data on 0.0.0.0 ROUTER socket

  • CVE-2026-3060
    CRITICAL

    SGLang's encoder parallel disaggregation system is vulnerable to unauthenticated remote code execution through the disaggregation module

  • CVE-2026-7302
    CRITICAL

    SGLang's multimodal generation runtime has an unauthenticated path traversal vulnerability

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