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CVE-2026-5760

Lmsys Sglang remote code execution

9.8 CRITICALPublic exploitEPSS 1.14%
  1. Published20 Apr 2026

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().

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Lmsys Sglang< 0.5.11

Remediation

Fixed in
Lmsys Sglang≥ 0.5.11

References

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Frequently asked

Is CVE-2026-5760 being actively exploited?

CVE-2026-5760 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.14%.

How severe is CVE-2026-5760?

CVE-2026-5760 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.14% probability of exploitation.

Which products are affected by CVE-2026-5760?

Affected products include Lmsys Sglang.

How do I fix CVE-2026-5760?

Upgrade affected software to a fixed version, for example Lmsys Sglang 0.5.11 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-5760 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.