CVE-2026-5760
9.8 · CRITICALOverview
CVE-2026-5760 is a critical-severity vulnerability affecting lmsys sglang. It was published on April 20, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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().
Remediation
Check the references section for vendor advisories and patches from lmsys. Update sglang to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| lmsys | sglang | >= 0, < 0.5.11 | Affected |
Frequently Asked Questions
What is CVE-2026-5760?
CVE-2026-5760 is a critical-severity vulnerability affecting lmsys sglang. It was published on April 20, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2026-5760?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-5760?
Check the references section for vendor advisories and patches from lmsys. Update sglang to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-5760?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-5760 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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