Arbitrary Code Injection Affecting sglang package, versions [0,0.5.11)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-PYTHON-SGLANG-16114943
- published21 Apr 2026
- disclosed20 Apr 2026
- creditStuart Beck
Introduced: 20 Apr 2026
CVE-2026-5760 (opens in a new tab)How to fix?
Upgrade sglang to version 0.5.11 or higher.
Overview
sglang is a SGLang is a fast serving framework for large language models and vision language models.
Affected versions of this package are vulnerable to Arbitrary Code Injection via the reranking endpoint when a model file containing a malicious tokenizer.chat_template is loaded, due to rendering Jinja2 chat templates using an unsandboxed jinja2.Environment. An attacker can execute arbitrary code by supplying a crafted model file with a malicious template.