What’s Vulnerable › Vulnerabilities

CVE-2026-5760: CVE-2026-5760

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-20 · updated 2026-06-17
• Weakness: CWE-94

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().

Affected products

• SGLang: before 0.5.11 — fixed in 0.5.11

How to fix

Upgrade to a fixed version: SGLang 0.5.11. Check the vendor advisory for mitigations.

References

• https://github.com/Stuub/SGLang-0.5.9-RCE
• https://github.com/sgl-project/sglang/pull/23660
• https://www.kb.cert.org/vuls/id/915947

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