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Vulnerability record · CVE-2026-5760 · published 20 April 2026

CVE-2026-5760: Lmsys sglang code injection vulnerability

Lmsys · Sglang

SGLang's reranking endpoint (/v1/rerank) achieves Remote Code Execution (RCE) when a model file containing a malcious tokenizer.chat_template is loaded, as the Jinja2 chat templates are rendered using an unsandboxed jinja2.Environment().

9.8 CVSS 3.1 Critical EPSS 1.1% · top 34.7% CWE-94 · Code injection
9.8CVSS 3.1 base score
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

SGLang's reranking endpoint (/v1/rerank) achieves Remote Code Execution (RCE) when a model file containing a malcious tokenizer.chat_template is loaded, as the Jinja2 chat templates are rendered using an unsandboxed jinja2.Environment().

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/Stuub/SGLang-0.5.9-RCE ExploitThird Party Advisory
https://github.com/sgl-project/sglang/pull/23660 Issue TrackingPatch
https://www.kb.cert.org/vuls/id/915947 Third 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-2026-5760), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.