CVE 9.8 CRITICAL

CVE-2026-5760_CVE-2026-5760

April 20, 2026 invoker category_cve

9.8 / 10

CRITICAL

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

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().

AI Analysis

Remote Code Execution (RCE) vulnerability in SGLang's reranking endpoint

Basic Information

ID CVE-2026-5760

Source certcc

Published Apr 20, 2026 at 13:46

Modified Apr 20, 2026 at 14:22

Affected Product

Vendor SGLang

Product SGLang

Version 0.59

Affected Versions SGLang SGLang 0.59

CWE Classification

CWE-94

AI Assessment

AI Score 9.8 / 10

AI Severity Critical

Vendor SGLang

Product SGLang

Version 0.59

References

github.com /Stuub/SGLang-0.5.9-RCE

{
    "lastseen": "",
    "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().",
    "published": "2026-04-20T13:46:23.603Z",
    "modified": "2026-04-20T14:22:12.163Z",
    "type": "cve",
    "title": "CVE-2026-5760",
    "source": "certcc",
    "references": "https://github.com/Stuub/SGLang-0.5.9-RCE",
    "id": "CVE-2026-5760",
    "bulletinFamily": "",
    "cwe": [
        "CWE-94"
    ],
    "cvelist": null,
    "sourceData": "SGLang SGLang 0.59",
    "sourceHref": "",
    "cvss": {
        "score": 9.8,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "SGLang",
    "version": "0.59",
    "vendor": "SGLang",
    "ai_description": "Remote Code Execution (RCE) vulnerability in SGLang's reranking endpoint",
    "ai_severity": "Critical",
    "ai_vendor": "SGLang",
    "ai_product": "SGLang",
    "ai_version": "0.59",
    "ai_score": 9.8
}

💭 Join the Security Discussion ❌ Cancel Reply