CVE-2026-5760NVD

Vulnerability Summary

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().

Severity Level

CRITICAL(9.8)

Published Date

Apr 20, 2026

Last Modified

Jun 3, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.85%Probability

Root Weakness (CWE)

CWE-94: Code Injection ↗

The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended syntax or behavior.

CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

Affected & Patched Versions

Affected Versions

Lmsys Sglang < 0.5.11

Patched Versions

Lmsys Sglang 0.5.11

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