CVE-2026-5760: Lmsys Sglang

What is CVE-2026-5760?

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().

CVSS9.8 NVD 3.1

SeverityCRITICAL

ExploitationNo exploitation reported

EPSS1% · P54

Triage statusNo Known Exploit

ActionPatch within 48 hours

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

NVD published2026-04-20

NVD last modified2026-06-17

Timeline

2026-04-20Published to the U.S. National Vulnerability Database (NVD)
2026-04-21First covered in a defend.network daily briefing
2026-06-17NVD record last updated

Affected product

Lmsys Sglang

References

Referenced in our briefings & reports

SGLang & Anthropic MCP RCE; APT campaigns hit OT/healthcare auth (2026-04-21)

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🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.

What is CVE-2026-5760?

Timeline

Affected product

References

Referenced in our briefings & reports

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