CVE-2026-5760

Published: Apr 20, 2026Modified: Jun 17, 2026

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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 (1)

Products: Lmsys: Sglang

Lmsys

1 product

Sglang

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Lmsys Sglang	Before 0.5.11

Related CWEs

CWE-94

Improper Control of Generation of Code ('Code Injection')

The product 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 syntax or behavior of the intended code segment.

References (3)

https://github.com/Stuub/SGLang-0.5.9-RCE

Source: cret@cert.org

ExploitThird Party Advisory

https://github.com/sgl-project/sglang/pull/23660

Source: cret@cert.org

Issue TrackingPatch

https://www.kb.cert.org/vuls/id/915947

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

Timeline

No history available yet.