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Vulnerability record · CVE-2026-7301 · published 18 May 2026

CVE-2026-7301: Lmsys sglang deserialization of untrusted data vulnerability

Lmsys · Sglang

SGLangs multimodal generation runtime scheduler's ROUTER socket binds to 0.0.0.0 by default and contains a sink that calls pickle.loads() on incoming messages, enabling RCE when exposed to the internet.

9.8 CVSS 3.1 Critical EPSS 0.60% · top 53.6% CWE-502 · Deserialization of untrusted data
9.8CVSS 3.1 base score
0.60%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

SGLangs multimodal generation runtime scheduler's ROUTER socket binds to 0.0.0.0 by default and contains a sink that calls pickle.loads() on incoming messages, enabling RCE when exposed to the internet.

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://antiproof.ai/blog/three-rces-in-sglang/ Permissions Required
https://github.com/sgl-project/sglang/tree/main/python/sglang Product

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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-2026-7301), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.