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CVE-2026-15978

Quick assessment

Affected
SGLang SGLang
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

sglang sglang是sglang的大语言模型推理引擎。 sgl-project sglang v0.5.15及之前版本存在授权问题漏洞，该漏洞源于未配置API密钥，导致暴露两个端点，远程攻击者可触发分布式权重广播和数据传输，从而泄露所有模型权重。

AI Predicted 7.5 Difficulty: Easy EPSS 0.50% · P41

Affected Version Matrix 1

VendorProduct Version RangeStatus
SGLang SGLang ≤ v0.5.15 affected
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I. Basic Information for CVE-2026-15978

Vulnerability Information
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Vulnerability Title
CVE-2026-15978
Source: CVE Program / CVE List V5
Vulnerability Description
SGLang contains a model weight exfiltration vulnerability when no API keys are configured, as SGLang will expose two endpoints that allow a remote attacker to trigger distributed weight broadcasting using NCCL and then triggering data transfer, attackers can exfiltrate all model weights.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
sgl-project sglang 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
sglang sglang是sglang的大语言模型推理引擎。 sgl-project sglang v0.5.15及之前版本存在授权问题漏洞，该漏洞源于未配置API密钥，导致暴露两个端点，远程攻击者可触发分布式权重广播和数据传输，从而泄露所有模型权重。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SGLang SGLang 0 ~ v0.5.15 -

II. Public POCs for CVE-2026-15978

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III. Intelligence Information for CVE-2026-15978

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Vendor Advisories for CVE-2026-15978 (1)

Same Patch Batch · SGLang · 2026-07-30 · 6 CVEs total

CVE-2026-15974 CVE-2026-15974
CVE-2026-15976 CVE-2026-15976
CVE-2026-15969 CVE-2026-15969
CVE-2026-15977 CVE-2026-15977
CVE-2026-15971 CVE-2026-15971

IV. Related Vulnerabilities

Same product: SGLang
Same vendor: SGLang

V. Comments for CVE-2026-15978

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