CVE-2026-5760

Name: CVE-2026-5760
Creator: NVD / NIST
Published: 2026-04-20T14:16:21.68+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2026-5760 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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().. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

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().

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.85%

53.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Lmsys	Sglang	< 0.5.11

References

https://github.com/Stuub/SGLang-0.5.9-RCEExploit, Third Party Advisory
https://github.com/sgl-project/sglang/pull/23660Issue Tracking, Patch
https://www.kb.cert.org/vuls/id/915947Third Party Advisory

Timeline

Published: Apr 20, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-5760?

How severe is CVE-2026-5760?

CVE-2026-5760 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2026-5760?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-5760?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST